Question

What is the values of pOH 0.020M HNO3

Answer 1

The value of pOH for a 0.020 M HNO3 solution is 1.70, and the pH value is 12.30.

Step-by-step explanation:

The value of pOH for a 0.020 M HNO3 solution can be calculated using the formula pOH = -log([OH¯]). Since HNO3 is a strong acid, it completely dissociates in water to form H3O+ ions. Therefore, the concentration of OH- ions is equal to 0.020 M. Plugging this value into the formula, we get pOH = -log(0.020) = 1.70.

The pH value can be calculated using the formula pH = 14 - pOH. Therefore, pH = 14 - 1.70 = 12.30.

Answer 2

pOH is 12.3

Step-by-step explanation:

let's first get the pH of nitric acid:

`{ \sf{pH = - log[H {}^( + ) ]}}`

but:

[H†] = 0.020 M

therefore:

`{ \sf{pH = - log(0.020) }} \\ { \sf{pH = 1.7}}`

but, pOH = 14 - pH

`{ \sf{pOH = 14 - 1.7}} \\ { \sf{pOH = 12.3}}`