1) Hòa style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.65pt;mso-no-proof:yes"> tan hoàn style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> toàn style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.55pt;mso-no-proof:yes"> a gam oxit style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> FexOy style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> bằng style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.55pt;mso-no-proof:yes"> dung style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.55pt; mso-no-proof:yes"> dịch style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.65pt;mso-no-proof:yes"> H2SO4 đặc style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.5pt; mso-no-proof:yes"> nóng style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> (dư) style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.55pt;mso-no-proof:yes"> thấy style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.45pt; mso-no-proof:yes"> cần class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:2.05pt;margin-bottom:.0001pt;line-height:13.8pt;mso-line-height-rule: exactly">0,075 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> mol H2SO4, style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.5pt;mso-no-proof:yes"> thu style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> được style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> b gam muối style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> và style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.65pt; mso-no-proof:yes"> thoát style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.5pt;mso-no-proof:yes"> ra 168 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> ml khí style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.5pt; mso-no-proof:yes"> SO2 (sản style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.65pt; mso-no-proof:yes"> phẩm style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.7pt;mso-no-proof:yes"> khử style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.5pt; mso-no-proof:yes"> duy style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.45pt;mso-no-proof:yes"> nhất, style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.5pt;mso-no-proof:yes"> đo style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.55pt; mso-no-proof:yes"> ở đktc). style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.6pt;mso-no-proof:yes"> Oxit style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;mso-font-width:248%; mso-no-proof:yes"> là A. style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> FeO. style="mso-bidi-font-family: Calibri;color:black"> style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;mso-no-proof:yes">B. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;letter-spacing:-.05pt; mso-no-proof:yes">Fe style="font-size:8.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;mso-no-proof:yes">2 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">O3. style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">C. Fe3O4. D. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> FeO style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.65pt;mso-no-proof:yes"> hoặc style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> Fe3O4. Nhóm nitơ
class="MsoNormal" style="margin-top:0in;margin-right:0in;margin-bottom:0in; margin-left:2.05pt;margin-bottom:.0001pt;line-height:13.8pt;mso-line-height-rule: exactly">0,075 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> mol H2SO4, style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.5pt;mso-no-proof:yes"> thu style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> được style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> b gam muối style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> và style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.65pt; mso-no-proof:yes"> thoát style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.5pt;mso-no-proof:yes"> ra 168 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.55pt;mso-no-proof:yes"> ml khí style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.5pt; mso-no-proof:yes"> SO2 (sản style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.65pt; mso-no-proof:yes"> phẩm style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.7pt;mso-no-proof:yes"> khử style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.5pt; mso-no-proof:yes"> duy style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.45pt;mso-no-proof:yes"> nhất, style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.5pt;mso-no-proof:yes"> đo style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.55pt; mso-no-proof:yes"> ở đktc). style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.6pt;mso-no-proof:yes"> Oxit style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;mso-font-width:248%; mso-no-proof:yes"> là A. style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> FeO. style="mso-bidi-font-family: Calibri;color:black"> style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;mso-no-proof:yes">B. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;letter-spacing:-.05pt; mso-no-proof:yes">Fe style="font-size:8.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;mso-no-proof:yes">2 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">O3. style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">C. Fe3O4. D. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> FeO style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.65pt;mso-no-proof:yes"> hoặc style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> Fe3O4. Nhóm nitơ
A. style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> FeO. style="mso-bidi-font-family: Calibri;color:black"> style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;mso-no-proof:yes">B. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;letter-spacing:-.05pt; mso-no-proof:yes">Fe style="font-size:8.0pt;mso-bidi-font-size: 11.0pt;font-family:"Arial","sans-serif";color:black;mso-no-proof:yes">2 style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">O3. style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:"Arial","sans-serif"; color:black;letter-spacing:-.05pt;mso-no-proof:yes">C. Fe3O4. D. style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:Calibri;color:black;letter-spacing:.6pt; mso-no-proof:yes"> FeO style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:Calibri;color:black; letter-spacing:.65pt;mso-no-proof:yes"> hoặc style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family: Calibri;color:black;letter-spacing:.6pt;mso-no-proof:yes"> Fe3O4. Nhóm nitơ
1) Hòa tan hoàn toàn a gam oxit FexOy bằng dung dịch H2SO4 đặc nóng (dư) thấy cần 0,075 mol H2SO4, thu được b gam muối và thoát ra 168 ml khí SO2 (sản phẩm khử duy nhất, đo ở đktc). Oxit là A. FeO. B. Fe2O3. C. Fe3O4. D. FeO hoặc Fe3O4.
0,075 mol H2SO4, thu được b gam muối và thoát ra 168 ml khí SO2 (sản phẩm khử duy nhất, đo ở đktc). Oxit là A. FeO. B. Fe2O3. C. Fe3O4. D. FeO hoặc Fe3O4.
A. FeO. B. Fe2O3. C. Fe3O4. D. FeO hoặc Fe3O4.