Question

1. On putting few drops of an unknown solution on pH strip, the colour changed to
violet. The solution is likely to be:
(a) Dilute acetic acid
(b) Concentrated acetic acid
(c) water
d) Dilute sodium hydroxide​

Answer 1

solution likely to be violet in water

Answer 2

● On putting few drops of an unknown solution on pH strip the colour changed to violet this indicates that the solution is pure water whose pH is 7 that is neutral.

● pH strip is an indicator used to know the pH value of of solution that is whether the solution is acidic or basic.

● pH strip turns red when it is dipped in acidic solution and turns to green when it is dipped in basic solution.