What is the pOH concentration of a. 0768 M NaOH solution?

Answer: 1.2

Explanation:

pOH is the negative logarithm of hydroxide ion concentration in the solution.

Thus, pOH is expressed as

pH = - log (OH-)

NaOH (aq) - --> Na (aq) + OH - (aq)

The alkali ionizes to give hydroxide ion OH - as the only negative ion. Hence, the concentration of OH - is also 0.0768

So, pOH = - log (0.0768)

pH = - (-1.15)

pH = 1.15 (since the two minus signs will cancel out)

Round the pOH value to the nearest tenth as 1.2

Thus, the pOH concentration of 0.0768 NaOH solution is 1.2 (highly concentrated)