Question

1) H2S+SO4-> 2) H2S->S->K2S->PbS3) Cu+H2SO4(концентрированное)->4) H2SO4(разб.)+Zn->​

Answer 1

Ответ:

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Объяснение:

1) H2S + SO4 -> H2O + SO2 + S

H2S -> S + H2

S + K2S -> K2SO4

2) K2SO4 + Pb(NO3)2 -> 2PbSO4 + 2KNO3

3) Cu + H2SO4 (концентроване) -> CuSO4 + SO2 + 2H2O

4) H2SO4 (розб.) + Zn -> ZnSO4 + H2↑

Answer 2

1) H2S + SO4 -> The reaction between hydrogen sulfide (H2S) and sulfuric acid (H2SO4) results in the formation of sulfur (S). The balanced chemical equation for this reaction is:

H2S + 2H2SO4 -> 3S + 4H2O

2) H2S -> S -> K2S -> Hydrogen sulfide (H2S) can be oxidized to form sulfur (S). Sulfur can then react with potassium hydroxide (KOH) to form potassium sulfide (K2S). The balanced chemical equation for this reaction is:

H2S + 2KOH -> K2S + 2H2O

3) Cu + H2SO4 (concentrated) -> When copper (Cu) reacts with concentrated sulfuric acid (H2SO4), it forms copper(II) sulfate (CuSO4) and sulfur dioxide (SO2). The balanced chemical equation for this reaction is:

Cu + 2H2SO4 -> CuSO4 + SO2 + 2H2O

4) H2SO4 (dilute) + Zn -> When dilute sulfuric acid (H2SO4) reacts with zinc (Zn), it forms zinc sulfate (ZnSO4) and hydrogen gas (H2). The balanced chemical equation for this reaction is:

H2SO4 + Zn -> ZnSO4 + H2

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