Which of the following are reversible reactions ?

Options

A. ` AgNO_(3) (aq) + NaCl (aq) to`
`AgCl (s) + NaNO_(3) (aq)`
B. `KNO_(3) (aq) + NaCl (aq) to `
` KCl (aq) + NaNO_(3)`
C. ` BaCl_(2) (aq) + Na_(2) SO_(4) to`
`BaSO_(4) (s) + 2 NaCl (aq) `
D. `AgCl (s) + Water to Ag^(+) (aq) + Cl^(-) (aq)`

Answer

B, D

Explanation

In (b), ions are in equilibrium . In (d) , ions are in equilibrium with the undissolved salt .