Question

Addition of water to which of the following equilibria causes it to shift in the backward direction?

• A. CH3NH2 (aq) + H2O ($\mathcal{l}$) CH3NH3Å (aq) + OH– (aq)
• B. AgCl (s) Ag+ (aq) + Cl– (aq)
• C. HCN (aq) + H2O ($\mathcal{l}$) H3O+ (aq) + CN– (aq)
• D. [Cr(dien)2]3+ (aq) + 3H2O ($\mathcal{l}$) + 3Cl– (aq) [Cr (H2O)3Cl3] (aq) + 2 dien (aq)

Answer 1

Answer: (A)

CH3NH2 (aq) + H2O ($\mathcal{l}$) CH3NH3Å (aq) + OH– (aq)

Answer 2

$T \uparrow K_{C} \uparrow \Rightarrow$ Endothermic