The pH of various aqueous solutions
are shown in the table below.
64 Complete the table in your answer booklet
by writing the color of thymol blue in the NaCl(aq) and in
the NaOH(aq) solutions. 
65 State how many times greater the hydronium ion
concentration in the HCl(aq) is than the hydronium ion
concentration in the HC2H3O2(aq).