CBSE Class 11-science Answered
pls explain
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Asked by mufeedatvp2000 | 18 Apr, 2020, 14:21: PM
NH4Cl and NH3 forms a basic buffer solution.
![If space pH equals 8.
then space pOH equals 6
left square bracket OH to the power of minus right square bracket equals 10 to the power of negative 6 end exponent
For space Metal space hydroxide space of space any space Metal space having space 2 space valency minus
straight M left parenthesis OH right parenthesis subscript 2 rightwards arrow straight M to the power of plus 2 end exponent space plus 2 OH to the power of minus
straight Q equals left square bracket straight M to the power of plus 2 end exponent right square bracket left square bracket OH to the power of minus right square bracket squared space left square bracket straight M to the power of plus 2 end exponent right square bracket equals fraction numerator 0.2 over denominator 2 end fraction equals 0.1 straight M space space left parenthesis because space now space volume space is space doubled right parenthesis
So comma space straight Q equals 0.1 open parentheses 10 to the power of negative 6 end exponent close parentheses squared equals 10 to the power of negative 13 end exponent
Precipitation space will space occur space when space straight Q greater than straight K subscript sp
So comma space option space left parenthesis 3 right parenthesis space is space correct.](https://images.topperlearning.com/topper/tinymce/cache/f591ebdfb3b5798cbf07799ab9d4d58b.png)
Answered by Ravi | 18 Apr, 2020, 21:25: PM
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