Question

4. Слили попарно растворы: 1) FeSO4 и HCl 2) CuCl2 и H2S 3) Na2SO4 и H3PO4Укажите, в каком случае произойдет реакция? Составьте сокращенное ионно- молекулярное уравнение протекающей реакции

Answer 1

CuCl2+H2S⇒CuS↓+2HCl
Cu⁺²+S⁻²⇒CuS↓

Answer 2

Reaction between FeSO4 and HCl:

When FeSO4 (iron(II) sulfate) and HCl (hydrochloric acid) are mixed, a reaction occurs. The iron(II) sulfate reacts with hydrochloric acid to form iron(II) chloride and sulfuric acid. The balanced chemical equation for this reaction is:

FeSO4 + 2HCl → FeCl2 + H2SO4 [[1]]

Reaction between CuCl2 and H2S:

When CuCl2 (copper(II) chloride) and H2S (hydrogen sulfide) are mixed, a reaction occurs. Copper(II) chloride reacts with hydrogen sulfide to form copper(II) sulfide and hydrochloric acid. The balanced chemical equation for this reaction is:

CuCl2 + H2S → CuS + 2HCl [[2]]

Reaction between Na2SO4 and H3PO4:

When Na2SO4 (sodium sulfate) and H3PO4 (phosphoric acid) are mixed, no reaction occurs. Sodium sulfate and phosphoric acid do not react with each other under normal conditions.

Therefore, the only case where a reaction will occur is when FeSO4 and HCl are mixed.

Please let me know if there is anything else I can help you with!