Question

A salt can be produced by the reaction between:
A. a weak acid and weak base
B. metal oxide and water
C. metal and a mineral acid
D. metal oxide and a mineral acid

• A. A, B and C
• B. B, C and D
• C. C, D and A
• D. D, A and B

Answer 1

Answer: (C)

C, D and A

$\left[A\right]$ $C{H}_3\underset{weakacid}{COOH}+\underset{weakbase}{N{H}_{4}OH}\to C{H}_3-\underset{salt}{COON{H}_4}+H_{2}O$
$\left[B\right]$ $\underset{metaloxide}{N{a}_{2}O}+H_{2}O\to \underset{base}{2NaOH}$
$\left[C\right]$ $\underset{metal}{Ca}+2HCl\to \underset{salt}{CaC{l}_2}+H_2\uparrow$
$\left[D\right]$ $\underset{metaloxide}{N{a}_{2}O}+\underset{mineralacid}{H_{2}S{O}_4}\to \underset{salt}{N{a}_{2}S{O}_4}+H_{2}O$