what is self indicator
Answers
Answered by
61
Self indicator is actually a chemical substance which can mark the end point of a titration or any other reaction along with self-participation in the reaction.
For example, acidified Potassium dichromate paper turns from orange to green in presence of Sulphur dioxide.
K2Cr2O7+H2SO4+3SO2=K2SO4+Cr2(SO4)3+H2o
Here,Cr2(SO4)3 is green due to which,the entire colour turns bright green.
But some indicators like litmus do not change its own chemical composition to indicate colour change.
For example, acidified Potassium dichromate paper turns from orange to green in presence of Sulphur dioxide.
K2Cr2O7+H2SO4+3SO2=K2SO4+Cr2(SO4)3+H2o
Here,Cr2(SO4)3 is green due to which,the entire colour turns bright green.
But some indicators like litmus do not change its own chemical composition to indicate colour change.
Answered by
1
Answer:
In a reaction one of the reactant act as a indicators for that indicators called as self indicators
Similar questions