PLEASE HELP A student starts with 0.303 g of pure 4-aminobenzoic acid, (molar mass 137.14 g/mol) and ends up with 0.318 g of benzocaine (molar mass 165.19 g/mol).

Given that ethanol is in excess, what are the theoretical and percent yields for this reaction? Assume all starting material is converted to product when calculating the theoretical yield

Explanation:

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In this case, since the reaction (A->B) have an initial amount of pure 4-aminobenzoic acid, the first step to compute the theoretical yield is to solve the following stoichiometric setup:

Whereas A stands for 4-aminobenzoic acid and B for the benzocaine. Moreover, we compute the percent yield by dividing the actual yield (0.318 g) by the theoretical one (0.365 g):

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explanation:

the answer for sodium is 0.186

the answer for rubidium is 0.251