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Question

Can anyone help me with this question?

(a) Write a chemical equation with state symbols to show how ions  are produced when HA* is dissolved in water.

(b) Hence write a chemical equation with state symbols for the reaction of aspirin with sodium hydroxide. 

*Aspirin contains a mono-basic acid. The formula of the acid can be represented by HA.

Answer

a.) H+(aq)+A(aq)

H+ ions are formed as the H atom loses 1 electron to the A atom, which needs one more electron for a full shell since it is monobasic. The state is aqueous as they are dissolved in water.

 

b.) HA + NaOH = NaA + H2O

The ions are:

Na+

H+

OH-

A-

So they swap, giving you the equation.

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