Page 152 - Chemistry_Form_2

Chemistry
for Secondary Schools

Beaker of solution A B C D E

pH 1 5 7 9 14

Which solution had a;
FOR ONLINE READING ONLY
(i) strong alkali?

(ii) strong acid?
(iii) weak acid?
(iv) neutral solution?

(v) weak base?

16. During a neutralisation reaction, a student placed 25 cm of sodium
3
hydroxide in a flask and added few drops of phenolphthalein. The base
required 22 cm of dilute hydrochloric acid for complete neutralisation.
3
(a) What apparatus should have been used to measure the exact volume of
sodium hydroxide solution?

(b) What reagent was more concentrated than the other? Explain.

(c) Name the salt that was formed.
(d) How would you obtain pure crystals of the salt resulting from the
solution?

(e) Write a balanced net ionic equation for the reaction.

Student’s Book Form Two 145

01/08/2025 11:21:11
CHEMISTRY FORM TWO NEW 2025 DUMMY.indd 145 01/08/2025 11:21:11
CHEMISTRY FORM TWO NEW 2025 DUMMY.indd 145