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CBSE Class 11-science Answered

if h+ concentration to 5/3×10^-4, then find the ph
Asked by sarojlaxmiacharjya | 03 Jan, 2022, 08:50: PM
Expert Answer
pH is calculated by -
 
p H equals negative log left square bracket H to the power of plus right square bracket

left square bracket H to the power of plus right square bracket equals thin space C o n c e n t r a t i o n space o f space H to the power of plus space i o n s

p H equals negative log left square bracket 5 over 3 cross times 10 to the power of negative 4 end exponent right square bracket

p H equals open square brackets negative log left parenthesis 5 over 3 cross times 10 to the power of negative 4 end exponent right parenthesis close square brackets

A f t e r space a p p l y i n g space p r o p e r t i e s space log left parenthesis m. n right parenthesis equals log m space plus log n

p H equals open square brackets negative log left parenthesis 5 over 3 right parenthesis space minus log left parenthesis 10 to the power of negative 4 end exponent right parenthesis close square brackets

N o w space a p p l y i n g comma space log left parenthesis m over n right parenthesis equals space log m minus log n
space space space space space space space space space space space space space space space space space space space space space space log left parenthesis m to the power of n right parenthesis equals n log m

p H equals open square brackets negative log left parenthesis 5 right parenthesis minus log left parenthesis 3 right parenthesis space plus 4 log left parenthesis 10 right parenthesis close square brackets

p H equals left square bracket negative 0.698 minus 0.477 minus 4 cross times 1 right square bracket
p H equals space left square bracket negative 0.698 minus 0.477 plus 4 right square bracket
p H equals 2.825
 
Answered by Ravi | 04 Jan, 2022, 12:23: PM
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