Homework Answers
In this process the sulfur (S) in the form of H2S present in the sample is finally trapped in 0.108 g of CdSO4
Step1:
Calculate the # moles of CdSO4 = mass of CdSO4/mol wt of CdSO4 = 0.108/208 = 0.00053 moles
these are also the # moles of S which are the same as the # moles of H2S
Step 2:
From the moles of H2S find the mass
mass of H2S = moles * mol wt H2S = 0.00053 * 34 = 0.018 g
Step 3:
Weight of the original sample is 50.0 g
% H2S = 0.018/50.0 * 100 = 0.036%
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