A volume of 500.0mL of 0.120M NaOH is added to 615mL of 0.200M weak acid (Ka=6.74x10^-5). What is the pH of the resulting buffer?
HA(aq)+OH^-(aq)—> H2O(l)+A^-(aq)

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.