Salicylic acid (C7H6O3) reacts with acetic anhydride (C4H6O3) to form acetylsalicylic acid (C9H8O4). 2C7H6O3(aq) + C4H6O3(aq) mc
2 answers:
In order to understand what is the limiting reactant is useful to convert the masses of reactants into moles. The molecular masses are:
Converting masses into moles:
In the reaction, 2 moles of
are necessary to react with 1 mol of 
. Following this ratio:
We have only 0.5 mol of, i.e, we don't have enough amount of salicylic acid, therefore, this is the limiting reactant.
Converting masses into moles:
In the reaction, 2 moles of
We have only 0.5 mol of
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Answer:
pH = 10.9
Explanation:
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In this case, according to the given information, it turns out possible for us to say that the undergoing reaction between this buffer and OH⁻ promotes the formation of more CO₃²⁻ because it acts as the base, we can do the following:
The resulting concentrations are:
Thus, since the pKa of this buffer system is 10.2, the change in the pH would be:
Which makes sense since basic OH⁻ ions were added.
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