IGCSE Chemistry 0620/32/F/M/21 Q8a-c

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Cher Questions Solution Bank Rumusan Jawapan SPM & IGCSE Questions Answers Solution

8 Aqueous ammonia is an alkali.
(a) Complete the dot-and-cross diagram to show the electron arrangement in a molecule of ammonia.
N H
H
H
[2]

(b) Complete the word equation for the reaction of aqueous ammonia with dilute hydrochloric acid.
ammonia + hydrochloric acid –> ……………………
[1]

(c) Describe the colour change when excess aqueous ammonia is added to an acidified solution of methyl orange.
from ………………………………………………………. to ………………………………………………………. [1]

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    2022-07-04T17:39:03+08:00

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