Lemon and orange juices contain ......... and ......... acids respectively.

$HF + HClO_4 \rightleftharpoons H_2F^{+} + ClO_4^-$ and $H_2O + H_2PO_4^- \rightleftharpoons H_3O^{+} + HPO_4^{2-}$ Select the group of acidic species present on the right side of the equilibrium.

Which of the following compounds acts as a $Lewis$ base?

When ammonia is added to water,which of the following ions is responsible for the increase in its basicity (or decrease in $H_3O^+$ concentration)?

Which of the following is not a Lewis base?

Lemon gives a sour taste because of