Na2S+2AgNO3 = Ag2S + NaNO3 If 2.86g of Ag2S are actually produced by a reaction between an excess of Na2S and 4.27g of AgNO3 then what is the percent yield of Ag2S
A. 3.15%
B. 45.9%
C. 61.2%
D. 91.0%

D. 91.0%

Explanation:

Hello,

In this case, for the given chemical reaction:

Next, since silver nitrate (molar mass 169.87 g/mol) is in a 2:1 molar ratio with silver sulfide (molar mass 247.8 g/mol), we compute its theoretical yield as shown below:

Next, we compute the percent yield as:

Hence, answer is D. 91.0%.

Best regards.