9701/12/F/M/16 Q18

Question

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

River water in a chalky agricultural area contains Ca2+, Mg2+, CO3
2–, HCO3

, Cl
− and NO3

ions. In
a water treatment plant, such water is treated by adding a calculated quantity of calcium
hydroxide.
What will be precipitated from the river water following the addition of calcium hydroxide?
A CaCl 2 B CaCO3 C Ca(NO3)2 D Mg(NO3)2

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