The Marble test is used to determine the stability of which component in water? (Variant wording)

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Multiple Choice

The Marble test is used to determine the stability of which component in water? (Variant wording)

Explanation:
Calcium carbonate stability is what the Marble test measures. The test uses marble, which is CaCO3, immersed in water to see whether the solid dissolves or if a scale forms on its surface. If the marble dissolves, the water is undersaturated with CaCO3 and tends to corrode calcium carbonate surfaces in the system. If material deposits on the marble, the water is supersaturated with CaCO3 and has a tendency to form scale. This test thus indicates how aggressive or scaling-prone the water is with respect to calcium carbonate, guiding decisions on corrosion control and scale prevention. The other substances listed pertain to different aspects of water chemistry and are not what the Marble test assesses.

Calcium carbonate stability is what the Marble test measures. The test uses marble, which is CaCO3, immersed in water to see whether the solid dissolves or if a scale forms on its surface. If the marble dissolves, the water is undersaturated with CaCO3 and tends to corrode calcium carbonate surfaces in the system. If material deposits on the marble, the water is supersaturated with CaCO3 and has a tendency to form scale. This test thus indicates how aggressive or scaling-prone the water is with respect to calcium carbonate, guiding decisions on corrosion control and scale prevention. The other substances listed pertain to different aspects of water chemistry and are not what the Marble test assesses.

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