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Chapter 22: Problem 64

How is hydrogen sulfide generated in the laboratory?

Short Answer

Expert verified
Hydrogen sulfide can be generated in the laboratory by reacting sulfur in the form of Ferrous sulfide (FeS) with an acid such as hydrochloric acid (HCl) in a Kipp's generator. The reaction releases hydrogen sulfide gas which is toxic and the experiment should therefore be carried out under a fume hood.

Step by step solution

01

Gathering the reactants

To generate hydrogen sulfide, we need sulfur and an acid that can donate hydrogen ions. Usually Ferrous sulfide (FeS) and dilute Hydrochloric acid (HCl) is used.
02

Setup apparatus

Setup an apparatus with a Kipp's generator. Ferrous sulfide is placed in the middle bulb of the Kipp's generator. The lower bulb is partly filled with dilute Hydrochloric acid.
03

Start of the reaction

The lower bulb is squeezed, this forces the acid into the middle bulb where it reacts with the ferrous sulfide to produce hydrogen sulfide.
04

Generation of Hydrogen Sulfide

The reaction can be represented as follows: \(FeS + 2HCl \rightarrow FeCl_2 + H_2S\). The hydrogen sulfide gas then escapes through the top.
05

Safety Precautions

Due to the toxic nature of hydrogen sulfide gas, it is important to carry out this experiment in a well-ventilated area or under a fume hood if available.

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