F is an inorganic salt. Carry out the following exercises on F. Record your observations and identify any gas(es) evolved. State the conclusions you draw from the results of each test.

(a) Transfer F into a test tube and add dil. HCl to it until a clear solution is obtained.

(b) Divide the clear solution obtained from (a) into two portions

(i) To the first portion add  NaOH\(_{(aq)}\) in drops and then in excess.

(ii) To the second portion, add few drops of potassium hexacyanoferrate (II) solution.