pH at which an acidic indicator with `K_("in")=1xx10^(-5)` changes colour when the indicator is `1xx10^(-3)` M is
pH at which an acidic indicator with `K_("in")=1xx10^(-5)` changes colour when the indicator is `1xx10^(-3)` M is
A. 8
B. 4
C. 3
D. 5
4 views
1 Answers
Correct Answer - D
The pH at which an acidic indicator changes colour is equal to its `pK_("in")` and is independent of its concentration
`pK_("in")("basic")=-log 10^(-10)=10`
4 views
Answered