Chemistry, asked by vasudhakaushal2002, 9 months ago

calculate ph of 2×10^-4M forkic acid solution, if it's ka is 10^-5.

Answers

Answered by merlinelizabethsunny

1

formic acid is a weak acid

pH = 1/2 (pKa- logC) C = molar concentration pKa=logKa

=1/2 ( log 10⁻⁵ - log 2× 10⁻⁴)

=1/2 (5-(log2 -log10⁻⁴)

=1/2(5+3.39)

= 4.19

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