The pH of a buffer containing equal molar concentration of a weak base and its chloride `(K_(b)` weak base `=2 xx 10^(-5) , log 2 =0.3 )` is

Question

The pH of a buffer containing equal molar concentration of a weak base and its chloride `(K_(b)` weak base `=2 xx 10^(-5) , log 2 =0.3 )` is

The pH of a buffer containing equal molar concentration of a weak base and its chloride `(K_(b)` weak base `=2 xx 10^(-5) , log 2 =0.3 )` is
A. 5
B. 9
C. 4.7
D. 9.3

Monjur Alahi

7 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
`pOH =pK_(b)=-log (2 xx 10^(-5))=5-0.36 =4.70`
Hence `pH=14-4.7 =9.3`

7 views Answered 2023-02-05 15:29