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Ostwald Dilution Law

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the correct formula to calculate yhe hydroxyl ion concentration in aqueous sol^{n } of NH4NO3 i

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Q. Hydrogen ion concentration of an aqueous solution is

1 \times 10^{- 4} M

. The solution is diluted with equal volume of water. Hydroxyl ion concentration of the resultant solution in terms of mol

d m^{- 3}

K_{a}

for butyric acid is

2.0 \times 10^{- 5}

. Calculate pH and hydroxyl ion concentration in

0.2 M

aqueous solution of sodium butyrate.

Q. An aqueous solution contains 10% ammonia by mass and has a density of 0.99

g c m^{- 3}

. Calculate hydroxyl and hydrogen ion concentration in this solution.(

K_{a} f o r {N H}_{4}^{+} = {5.0 \times 10}^{- 10} M

p H

of an aqueous solution is 5.5. The hydroxyl ion concentrated in the solution would be:

Q. Calculate the degree of ionisation and hydroxyl ion concentration in

0.2 M

{N H}_{3}

K_{b} = 1.85 \times 10^{- 5}

298 K

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