Which of the following is a general method of preparing acids?
-
A.
Direct combination of constituent elements -
B.
Double decomposition involving a salt solution -
C.
Reaction between an anhydride and water -
D.
Reaction between a base and an amphoteric oxide -
E.
Dissolution of hydroxides followed by neutralization
Correct Answer: Option C
Explanation
There are several methods of preparation of acids. These include the following:
1. By the reaction between an acidic oxide of a non-metal (acid anhydride) and water.
SO2(g) + H2O(l) → H2SO3(aq) Trioxosulphate(IV)
P4010(s) + 2H2O(l) → 4HPO3(aq) Trioxophosphate(V)