The ph of 10 8 m hcl solution is

Asked by admin @ 16/08/2021 in Chemistry viewed by 313 People

What is the pH of 10-8 M HCl solution?

Answered by admin @ 16/08/2021

If we use the relation, pH = – log [H3O+], we get pH equal to 8. But this is not correct because an acidic solution cannot have pH greater than 7. It may be noted that in very dilute acidic solution, when H+ concentrations from acid and water are comparable, the concentration of H+ from water cannot be neglected.

Therefore,
[H+] total = [H+] acid + [H+] water
Since HCl is a strong acid and is completely ionized
[H+] HCl = 1.0 x 10-8
The concentration of H+ from ionization is equal to the [OH–] from water,
[H+] H2O = [OH–] H2O
= x (say)
[H+] total = 1.0 x 10-8 + x
But
[H+] [OH–] = 1.0 x 10-14
(1.0 x 10-8 + x) (x) = 1.0 x 10-14
X2 + 10-8 x – 10-14 = 0
Solving for x, we get x = 9.5 x 10-8
Therefore,
[H+] = 1.0 x 10-8 + 9.5 x 10-8
= 10.5 x 10-8
= 1.05 x 10-7
pH = – log [H+] = – log (1.05 x 10-7) = 6.98

The ph of 10 8 m hcl solution is

Similar Questions

Calculate the ph of 10 8 m hcl solution

What is the ph of a 0.001 m hcl solution

What is the ph of a 0.00125 m hcl solution

What is the ph of 10 8 m hcl

Calculate the ph of 10 8 m hcl

What is the ph of a 0.050 m lioh solution

What is the ph of a 0.001 m hno3 solution

What is the ph of a 0.270 m ammonia solution

What is the ph of a 0.001 m koh solution

What is the ph of a 0.056 m hno3 solution

What is the ph of a 0.00001 molar hcl solution

Calculate the ph of a 0.10 m solution of naoh

What is the ph of a 0.0125 m naoh solution

What is the ph of a 0.1 m nh3 solution

What is the ph of a 0.10 m naoh solution

Most viewed questions in Chemistry

Discuss sn2 mechanism of methyl bromide using aqueous koh

Comparing lactose percentage between whole milk and powdered milk

Lewl letpa

50 examples of unbalanced chemical equations with answers

Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Prepare a chart giving detailed information of carbon compounds

Which 1 mole sample has the least entropy

If you are given the assignment to cut raw poultry

Effect of succinic acid on cst of phenol water system

The reaction between aluminium powder and anhydrous barium nitrate

Cnh4 lewis structure

2 3 dihydroxypropanal

Select true statements about the pentose phosphate pathway

Crossword puzzle on carbon and its compounds class 10

Ionic bond calculator