P and Q are aqueous solutions of sodium chloride and sodium hydroxide respectively. Which of these will turn
a) Blue litmus to red?
b) Red litmus to blue?
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Neither solution will turn blue litmus red. Solution P is sodium chloride, formed from a strong acid, hydrochloric acid (HCl), and a strong base, sodium hydroxide (NaOH). ... Therefore, the solution of sodium chloride will have no effect on red or blue litmus paper.
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