Question

A drop of blue litmus is added to each of four solutions given below . state the colour of litmus solutions observed in each case soap solution,sodium carbonate solution., vinegar and lemon juice

Answer 1

(blue litmus changes to red only when put in an acidic solution)
1.soap solution (basic in nature) does not show any colour change (the blue litmus stays blue)
2.sodium carbonate soln(basic in nature)does not show any colour change.
3.vinegar is acidic in nature and changes the colour of blue litmus to red
4.lemon juice is also acidic in nature and changes colour of blue litmus to red