Question

You have three solutions: HI(aq), HCN(aq), and NaOH(aq), but you don\'t know which is which, so you test each with litmus paper. In addition, you use each solution to complete the electrical circuit for a light bulb. Complete this table with the identity of each solution

Answer 1

A strong acid as HI or a strong base as NaOH dissociates completey when in aqueous solution. So these would give bright intensity for light bulb test in an electrical circuit.

Litmus test : Alkaline is blue and acidic is red

So the completed table here would be,

Solution    Litmus paper      Light bulb       Identity

    A                 red                    dim              HCN

    B                blue                  bright            NaOH

    C                 red                   bright              HI