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CHEMISTRY

JAMB 2011 - Question 19

Chemistry 2011 JAMB Past Questions - Question 19: How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)?

Choose the correct answers from the options given.

How many cations will be produced from a solution of potassium aluminium tetraoxosulphate (VI)?

A: 3

B: 4

C: 1

D: 2

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Correct Answer

Explanation

Potassium aluminum tetraoxosulfate(VI), commonly known as potassium alum, has the chemical formula KAl(SO4)2. When this compound dissolves in water, it dissociates into its constituent ions:

KAl(SO4)2 ? K? + Al³? + (SO4)²?

From this equation, you can see that one potassium ion (K?) and one aluminum ion (Al³?) are produced. Therefore, the correct answer is 2 cations produced from the solution.