Question

How would I write out the reaction that happen when NaOH is added to the 0.5 M solution of hydrochloric acid? Also, the reaction when NaOH is added to the 0.5 solution of phosphoric acid?

Answer 1

As NaOH is a strong base and HCl is a strong acid ,so when they react with each other neutraization reaction takes places i.e salt and water is formed as a product.

NaOH + HCl---> NaCl + H₂O

where NaCl is a salt and H₂O is water .

Generally these reactions makes the pH of solution 7.

Similarly when NAOH reacts with phosporic acid(H₃PO₄) ,then again neutralization reaction takes place as follows

NaOH + H₃PO₄ ---> NaH₂PO₄ + H₂O

where  NaH₂PO₄ is a salt