Acids and bases (A-level only)

Equal volumes of two solutions, each with a concentration of 0.20 mol dm^-3, are mixed together at 298 K.

Which pair of solutions, when mixed, forms a solution with a $pH>7\text{pH} > 7$ ?

$KOH\text{KOH}$ and $CH3–CH2COOH\text{CH}_3–\text{CH}_2\text{COOH}$

$HNO3\text{HNO}_3$ and $NaOH\text{NaOH}$

$HCl\text{HCl}$ and $CH3NH2\text{CH}_3\text{NH}_2$

$HBr\text{HBr}$ and $HCOONa\text{HCOONa}$

Acids and bases (A-level only) Questions

Equal volumes of two solutions, each with a concentration of 0.20 mol dm^-3, are mixed together at 298 K.

Which pair of solutions, when mixed, forms a solution with a $pH>7\text{pH} > 7$ ?

$KOH\text{KOH}$ and $CH3–CH2COOH\text{CH}_3–\text{CH}_2\text{COOH}$

$HNO3\text{HNO}_3$ and $NaOH\text{NaOH}$

$HCl\text{HCl}$ and $CH3NH2\text{CH}_3\text{NH}_2$

$HBr\text{HBr}$ and $HCOONa\text{HCOONa}$