MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryIonic equilibriumSelf-ionization of Water

A solution of an acid has pH = 4.70. Find out the concentration of OH– ions (pKw = 14)

A.5 × 10–10 M✓ Correct

B.4 × 10–10M

C.2 × 10–5 M

D.9 × 10–4 M

Explanation

We know that- 5 5 pH log[ log[H 4.70 2 ] ] ] 1.99 [H 10 10 x x H 14 w 5 14 14 5 9 10 K H ] [H [OH 1 [ ] 0 ] ] ]

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