Question

Find the h+ ion concentration in 100 ml of 0.001 m naoh solution

Answer 1

Answer:

10~-10 M

Explanation:

Quantity of solution = 100ml (Given)

Concentration = 0.001ml (Given)

Number of moles = volume of solution × concentration

= 100 × 0.001 = 0.1 mili mole

Molarity or concentration in 1L = number of moles/1000mL

= 0.1/1000

= 10^-4 M NaOH solution

Thus, pOH = -log[OH^-]  

= -log(10~-4)

= 4  

Since, pH + pOH = 14  

Thus, pH = 14 - pOH

= 14 - 4

= 10

or, pH = -log[H^+] = 10

or, [H^+] = 10^-10  

Therefore, the concentration of [H^+] ion will be 10~-10 M