1.

The pH of the mixture of 25 ml of 0.01 M of CH_3 COOH (K_a of CH_3 COOH = 5 xx 10 ^(-5)) and 25 ml of 0.01 M of NaOH solution is

Answer»

`7`
` 8`
` 10. 25`
` 9. 125`

Solution :complete neutralization
` pH =7 +((pK_a+log c)/( 2)) `
` = 7+ (( 5- log 5 + log ""(0.01)/(2))/( 2)) =7+((5-3)/(2))=8`


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