Question

conclusion for hardness of water sample​

Answer 1

Answer:

Conclusion:

Hardness is the property which makes water to form an insoluble precipitate with soap and is primarily due to the presence of calcium and magnesium ions. The hardness of good quality

water should not exceed 250mg/l measured as calcium carbonate equivalents.

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Answer 2

Answer:

The total hardness of water is significant because it is used to estimate the concentration of metal ions in it; the higher the concentration, the greater the risk to aquatic life and other creatures' health.

Explanation:

• The amount of calcium carbonate or its equivalent in different calcium and magnesium salts that are present in a million parts of water by mass is considered the degree of hardness.
• It's measured in ppm.
• The lathering that should be visible in the distilled water and the other test tubes is prevented by the calcium, magnesium, and iron(II) ions, which induce "hardness."
• Calcium chloride and calcium sulphate are only a couple of the compounds that can be added to culture water to make it harder.
• The addition of chloride, another physiologically active ion, to the culture water is another benefit of calcium chloride.

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