A $1\mathrm{.}0$ L buffer solution is $0\mathrm{.}15M$ in $HCN$ and $0\mathrm{.}10M$ in NaCN. Which action will destro$)$ the buffer? adding $0\mathrm{.}10$molHCN adding $0\mathrm{.}10$molHCl adding $0\mathrm{.}10$molNaCN adding $0\mathrm{.}10$molNaOH