Temporary hardness of water in a kitchen bucket is removed by:
AAdding common salt to the bucket on the kitchen counter
BFiltering through cloth, since hard ions are particulate
CCooling the water to near zero in a refrigerator overnight
DBoiling, since bicarbonates decompose to insoluble carbonates
Answer & Solution
Correct answer: D. Boiling, since bicarbonates decompose to insoluble carbonates
Temporary hardness (due to bicarbonates) is removed by boiling, precipitating carbonates.
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