Question

Alkalinity is caused by which positively charged ions of

Answer 1

Answer:

Calcium carbonate or other compounds such as magnesium carbonate contribute carbonate ions to the buffering system. Alkalinity is often related to hardness because the main source of alkalinity is usually from carbonate rocks (limestone) which are mostly CaCO3.

Answer 2

Alkalinity is not caused by positively charged ions

- Alkalinity is the measure of the capacity of water to neutralize the acids.

- The alkalinity of water is mainly due to the presence of bicarbonates, carbonates and hydroxide ions.

- Salts of weak acids, such as borates, silicates and phosphates, may also contribute to alkalinity.