TUTORIAL QUESTIONS

S.S. 3 TUTORIAL QUESTIONS

Q1 Sample A and B are CuSO4 and ZnCO₃ respectively. By using NaOH, HCl, BaCl2,                                           

Ca(OH)₂, Litmus paper. Describe how you will identify A and B.

Q2  Define each of the following terms in these formulae:

(i)    CaVa / CbVb = Na / Nb

(ii)   Amount of substance=Reacting mass/Volume (dm3)

Q3   Calculate the mass of sodium trioxocarbonate (iv), (Na2CO3), present in:

(a)                250 cm³of 0.20 mol/dm³

(b)               NaCO3 particles present in the solution.

Q4   (a)     What are alloys?

             (b)       Give the compositions of the following alloys:

                                     I.      Duralumin

                                  II.      Bronze

                               III.      Soft Solder.