Question

you are provided with four test tubes A,B,C and D containing blue litmus solution, red litmus solution, phenolphthalein and sodium bicarbonate respectively
i)Which test tube/ test tubes will help u identify HCL?
Which test tube/ test tubes will help u identify sodium hydroxide?

Answer 1

all will help because there are indicator and sodium bicarbonate react with acid to evolve co2

Answer 2

T.t A and t.t C are to be justified for hcl and tt b and c are justified for sodium hydroxide