Thiourea, (NH2)2CS, forms highly insoluble compounds with mercury. Therefore, the amount of thiourea in a sample can be determined by titration with mercuric ion in a reaction that can be described by: 4(NH2)2CS(aq) + Hg2+(aq) → [(NH2)2CS]4Hg2+(s) A 0.951 2-g sample containing thiourea (FM 76.12) required 14.88 mL of 4.752 mM Hg2+ to reach the end point. Calculate the mass percent of thiourea in the sample.
Thiourea, (NH2)2CS, forms highly insoluble compounds with mercury. Therefore, the amount of thiourea in a sample can be determined by titration with mercuric ion in a reaction that can be described by: 4(NH2)2CS(aq) + Hg2+(aq) → [(NH2)2CS]4Hg2+(s) A 0.951 2-g sample containing thiourea (FM 76.12) required 14.88 mL of 4.752 mM Hg2+ to reach the end point. Calculate the mass percent of thiourea in the sample.
Chemistry: Principles and Reactions
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ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
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Thiourea, (NH2)2CS, forms highly insoluble compounds with mercury. Therefore, the amount of
thiourea in a sample can be determined by titration with mercuric ion in a reaction that can be
described by:
4(NH2)2CS(aq) + Hg2+(aq) → [(NH2)2CS]4Hg2+(s)
A 0.951 2-g sample containing thiourea (FM 76.12) required 14.88 mL of 4.752 mM Hg2+ to reach the
end point. Calculate the mass percent of thiourea in the sample.
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