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Konstruk Konteks / Topik Aras Markah SkemaPemahaman Acids and Bases Rendah 1 D

Kertas 1

Soalan

Which of the following is not true about the properties of alkali?

A Undergoes neutralisation with acid.

B as a p !alue greater than ".

C Reacts with ammonium salt when heated to produce ammonia gas.D Reacts with metal carbonates to produce carbon dio#ide.

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Kertas 2

Soalan

A student is carried out two e#periment to in!estigate the acidit$ of two different acids% &.' mol dm() 

of each h$drochloric acid and ethanoic acid.*n the e#periments% 1& g of calcium carbonate is added to two beakers each containing 1&&.& cm) of

h$drochloric acid and ethanoic acid respecti!el$ as shown belows +

,a- ategorise the two acids as a weak acid and strong acid.

Weak acid + ///////////////////////////////////////////////// 0trong acid + //////////////////////////////////////////////// 

Skema :,a- Weak acid + ethanoic acid

  0trong acid + h$drochloric acid

Konstruk Konteks / Topik Aras Markah

Pengetahuan he 0trength of Acids and Alkalis Rendah 2

3#periment * + 1&&.& cm) of h$drochloric acid 4 1& g of calcium carbonate

3#periment ** + 1&&.& cm) of ethanoic acid 4 1& g of calcium carbonate