Question

Срочно помогите даю 50 балллллов Завершите запись тех уравнений реакций, которые будут происходить, если реакция не происходит, стрелочку зачеркните и объясните, почему она не происходит: Сr(NO3)3 + HСl→ BaCl2 + CuO → Fe(NO3)3 + NaOH → CuS + NaCl →MgCl2 + Na3PO4 → FeCO3 + HBr → Pb(NO3)2 + Al → Ag2S + Cu → Na2SiO3 + HNO3 → Al2(SO4)3 + Ba(NO3)2 →

Answer 1

Ответ:

Cr(NO3)3 + 3HCl → CrCl3 + 3HNO3

CuO + BaCl2 → CuCl2BaO

Fe(NO3)3 + 3NaOH → Fe(OH)3 + 3NaNO3

CuCl2 + Na2S → CuS + 2NaCl

2Na3PO4 + 3MgCl2 → Mg3(PO4)2 + 6NaCl

FeCO3 + 2HBr → CO2 + H2O + FeBr2

2Al + 3Pb(NO3)2 → 2Al(NO3)3 + 3Pb

Ag2S + Cu → 2Ag + CuS

Na2SiO3 + 2HNO3 → 2NaNO3 + H2SiO3

Al2(SO4)3 + 3Ba(NO3)2 → 2Al(NO3)3 + 3BaSO4

Answer 2

Equations and Explanation:

1. Cr(NO3)3 + HCl → (no reaction) - The reaction between Cr(NO3)3 and HCl does not occur because Cr(NO3)3 is a strong oxidizing agent and HCl is a reducing agent. In this case, the Cr(NO3)3 does not have a strong enough oxidizing power to oxidize the Cl^- ions in HCl, and therefore, no reaction takes place.

2. BaCl2 + CuO → (no reaction) - The reaction between BaCl2 and CuO does not occur because CuO is a stable compound and does not readily react with BaCl2. CuO is a metal oxide, and BaCl2 is a salt. In this case, there is no driving force for a reaction to occur between these two compounds.

3. Fe(NO3)3 + NaOH → Fe(OH)3 + NaNO3 - The reaction between Fe(NO3)3 and NaOH results in the formation of Fe(OH)3 (iron(III) hydroxide) and NaNO3 (sodium nitrate). This is a precipitation reaction, where the Fe(OH)3 precipitates out of the solution as a solid.

4. CuS + NaCl → (no reaction) - The reaction between CuS and NaCl does not occur because CuS is a stable compound and does not readily react with NaCl. CuS is a metal sulfide, and NaCl is a salt. In this case, there is no driving force for a reaction to occur between these two compounds.

5. MgCl2 + Na3PO4 → (no reaction) - The reaction between MgCl2 and Na3PO4 does not occur because MgCl2 is a stable compound and does not readily react with Na3PO4. MgCl2 is a salt, and Na3PO4 is a phosphate compound. In this case, there is no driving force for a reaction to occur between these two compounds.

6. FeCO3 + HBr → (no reaction) - The reaction between FeCO3 and HBr does not occur because FeCO3 is a stable compound and does not readily react with HBr. FeCO3 is an iron carbonate compound, and HBr is a strong acid. In this case, there is no driving force for a reaction to occur between these two compounds.

7. Pb(NO3)2 + Al → (no reaction) - The reaction between Pb(NO3)2 and Al does not occur because Al is a less reactive metal than Pb. Pb(NO3)2 is a salt, and Al is a metal. In this case, there is no driving force for a reaction to occur between these two compounds.

8. Ag2S + Cu → (no reaction) - The reaction between Ag2S and Cu does not occur because Cu is a less reactive metal than Ag. Ag2S is a silver sulfide compound, and Cu is a metal. In this case, there is no driving force for a reaction to occur between these two compounds.

9. Na2SiO3 + HNO3 → (no reaction) - The reaction between Na2SiO3 and HNO3 does not occur because Na2SiO3 is a stable compound and does not readily react with HNO3. Na2SiO3 is a sodium silicate compound, and HNO3 is a strong acid. In this case, there is no driving force for a reaction to occur between these two compounds.

10. Al2(SO4)3 + Ba(NO3)2 → (no reaction) - The reaction between Al2(SO4)3 and Ba(NO3)2 does not occur because both compounds are stable and do not readily react with each other. Al2(SO4)3 is an aluminum sulfate compound, and Ba(NO3)2 is a barium nitrate compound. In this case, there is no driving force for a reaction to occur between these two compounds.

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