What acid and alkali could be used to make a fertiliser?
A. Hydrochloric acid + sodium hydroxide
B. Sulfuric acid + sodium hydroxide
C. Nitric acid + potassium hydroxide
D. Hydrochloric acid + lithium hydroxide
The correct answer is C, due to the products of the reaction: HNO3 + KOH ----> KNO3, potassium nitrate, which is a wide-used fertilizer.
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