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Hardness of Water:Causes, Types and Treatments

If ionic prod...

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If ionic product of water is K_w=10^{-16 }at 4^° C,then a solution with pH=7.5 at 4^° C will

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Q. If ionic product of water is

K_{w} = 10^{- 16}

4^{o} C

, then a solution with

p H = 7.5

4^{o} C

Q. Ionic product of water at

80^{\circ} C

16 \times 10^{- 14} M^{2}

P H

of pure water (Neutral water)
(b) Define a solution acidic/ basic having

P H = 6.5 \to b a s i c

Q. The ionic product of water calculated by a student was found to be

1 \times 10^{16} {m o l e}^{2} / l^{2}

5^{o} C

. What is the nature of solution with

p H = 7

at same temperature?

Q. The ionic product of water calculated by a student was found to be

1 \times 10^{(- 16)} m o l^{2} l^{- 2}

5^{0}

C. What is the nature of a solution with pH = 7 at the same temperature?

Q. The ionic product of water is found to be

1 \times 10^{- 12} {m o l e}^{2} / l^{2}

60^{o} C

. What would be the nature of solution with pH

= 7

?

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