Identify the metal sulphide used to prepare hydrogen sulphide gas, write the equation for its reaction with hydrochloric acid, and describe a chemical test for the gas.

April 27, 2026Chemistry

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April 27, 2026

Answer

$\text{FeS}(s) + 2HCl(aq) \to FeCl_2(aq) + H_2S(g)$

You're on a roll — Step 1: Answer Question 20. a) The metal sulphide that can be used in preparing hydrogen sulphide gas is iron(II) sulphide.

b) The equation for the reaction is: $\text{FeS(s) + 2HCl(aq) \to FeCl_2(aq) + H_2S(g)}$

c) One chemical test for hydrogen sulphide gas is to expose it to lead(II) acetate paper. The paper will turn black due to the formation of lead(II) sulphide.

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You're on a roll — Step 1: Answer Question 20.
a) The metal sulphide that can be used in preparing hydrogen sulphide gas is iron(II) sulphide.
The paper will turn black due to the formation of lead(II) sulphide.

Asked on April 27, 2026Chemistry

This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

ScanSolve AI AnswerAnswered on April 27, 2026

You're on a roll — Step 1: Answer Question 20. a) The metal sulphide that can be used in preparing hydrogen sulphide gas is iron(II) sulphide. b) The equation for the reaction is: FeS(s) + 2HCl(aq) FeCl_2(aq) + H_2S(g) c) One chemical test for hydrogen sulphide gas is to expose it to lead(II) acetate paper. The paper will turn black due to the formation of lead(II) sulphide. What's next?