(Solved): please help  Choose all of the following statements that are correct about acids and bases. A \ ...

Choose all of the following statements that are correct about acids and bases. A \( 0.5 \mathrm{M} \) solution of \( \mathrm{HNO}_{2} \) will have a \( \mathrm{pH}<7 \). If \( \mathrm{pH} \) increases by 2 units, the \( [\mathrm{H}+] \) increases to 100 times the original. A strong base ionizes completely in aqueous solution. \( \mathrm{Cl}^{-} \)is the conjugate base of \( \mathrm{HCl} \). An acid with \( \mathrm{Ka}=0.002 \) is a weak acid. An acid and a base that differ by only one hydroxide ion are called conjugate acid-base pairs. The molar concentration of hydronium ion in pure water at \( 25^{\circ} \mathrm{C} \) is \( 1 \times 10^{-14} \).