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Potassium Dichromate

If pk_b for C...

Question

If pk_b for CN^- at 25^0C is 4.7, the pH of 0.5M NaCN solution is (Given 10^{-0.17 }=0.67

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What is the $p H$ of $0.5 M$ aqueous solution of $N a C N$ ? Given $p K_{b}$ of $C N^{-}$ = $4.70$

p K_{b}

C N^{-}

25^{o} C

p H

N a C N

p H

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

p K_{b}

C N^{-}

9.3

p H

500 m L

K C N

H C N

25^{o} C

p K_{b}

(C N^{-})

p K_{b}

C N^{⊖}

4.7

p H

2.5 m o l

K C N

2.5 m o l

H C N

500 m L

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