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Electrolysis and Electrolytes

what is the p...

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what is the pH of 0.5M aqueous solution of NaCN?given pkb of CN^-=4.7

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p K_{b}

C N^{-}

25^{o}

4.7

p H

0.5 M

N a C N

p K_{b}

C N^{-}

25^{o} C

p H

of 0.5 M aqueous

N a C N

25^{o} C

p K_{b}

K_{b}

being the dissociation constant at a base) for

{N H}_{3}

in aqueous solution is

4.7

. What is the pH of

0.1 M

aqueous solution of

{N H}_{4} C l

0.01 M

{N H}_{3}

(approximately)?

p H

500 m L

solution containing 2.5 moles of

K C N

and 2.5 moles of

H C N

25^{o} C

p K_{b}

(C N^{-})

p H

0.5 M B a (C N)_{2}

p K_{b}

C N^{-}

9.3

)

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