doubt

Asked by minipkda | 30th May, 2019, 09:19: AM

Expert Answer:

Barium acetate+acetic acid= acidic buffer
 
 
We space know space pH space of space acidic space buffer
pH equals pK subscript straight a space plus space log fraction numerator left square bracket Salt right square bracket over denominator left square bracket Acid right square bracket end fraction
pKa plus pKb equals 14
pK subscript straight b equals 14 minus 9.26
space space space space space space space equals 4.74

4.04 equals 4.74 plus log fraction numerator left square bracket salt right square bracket over denominator left square bracket acid right square bracket end fraction
left square bracket acid right square bracket equals 0.1 space straight M
4.04 minus 4.74 equals log fraction numerator left square bracket barium space acetate right square bracket over denominator 0.1 end fraction
left square bracket barium space acetate right square bracket equals 0.5 space straight M

moles space of space barium space acetate equals Moles cross times Volume left parenthesis straight l right parenthesis
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 0.5 cross times 100 over 1000
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 0.05 space mole

Answered by Ravi | 30th May, 2019, 04:35: PM