# What are [HO^-], and [H_3O^+] in the following solutions....?

## $a .$ $0.159 \cdot m o l \cdot {L}^{-} 1$ $H N {O}_{3} \left(a q\right)$. $b .$ $0.0150 \cdot m o l \cdot {L}^{-} 1$ ${H}_{2} S {O}_{_} 4 \left(a q\right)$. $c .$ $1.33 \cdot m o l \cdot {L}^{-} 1$ $K O H \left(a q\right)$. $d .$ $4.72 \times {10}^{-} 4 \cdot m o l \cdot {L}^{-} 1$ $C a {\left(O H\right)}_{2} \left(a q\right)$.

Mar 21, 2017

All of these are strong acids, OR strong bases..........

#### Explanation:

And thus ${H}_{3} {O}^{+}$ or ""^(-)OH are present in stoichiometric amounts.

$a .$ $0.159 \cdot m o l \cdot {L}^{-} 1$ $H N {O}_{3} \left(a q\right)$ is $0.159 \cdot m o l \cdot {L}^{-} 1$ in ${H}_{3} {O}^{+}$.

$b .$ $0.0150 \cdot m o l \cdot {L}^{-} 1$ ${H}_{2} S {O}_{_} 4 \left(a q\right)$ is $0.0300 \cdot m o l \cdot {L}^{-} 1$ in ${H}_{3} {O}^{+}$, i.e. $\text{sulfuric acid}$ is diprotic.

$c .$ $1.33 \cdot m o l \cdot {L}^{-} 1$ $K O H \left(a q\right)$ is $1.33 \cdot m o l \cdot {L}^{-} 1$ in $H {O}^{-}$.

$d .$ $4.72 \times {10}^{-} 4 \cdot m o l \cdot {L}^{-} 1$ $C a {\left(O H\right)}_{2} \left(a q\right)$ is $9.44 \times {10}^{-} 4 \cdot m o l \cdot {L}^{-} 1$ in $H {O}^{-}$.

All of these species are strong acids OR strong bases, and thus they are stoichiometric in ${H}_{3} {O}^{+}$ or $H {O}^{-}$.