Question

The [OH-] in 100ml of 0.016M HCl(aq)

Answer 1

Answer:

The concentration of hydroxide ion in 100 mL are $6.3010\times 10^{-13} M$.

Explanation:

Concentration of HCl = [HCl]= 0.016 M

$[HCl]=[H^+]=[Cl^-]=0.016 M$

$pH=\log [H^+]=-\log[0.016]=1.80$

pH + pOH = 14

pOH= 14 - pH = 14 - 1.80 = 12.2

$pOH=-\log[OH^-]$

$12.2=-\log[OH^-]$

$[OH^-]=6.3010\times 10^{-13} M$

The concentration of hydroxide ion in 100 mL are $6.3010\times 10^{-13} M$.