Question

What do you mean by hard water?

What is the difference between temporary and permanent hard water?​

Answer 1

Answer:

Hard water is water that has high mineral content (in contrast with "soft water"). Hard water is formed when water percolates through deposits of limestone, chalk or gypsum[1] which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.

Explanation:

Hard water contains dissolved magnesium and calcium ions. These make it more difficult for the water to form a lather with soap. Temporary hardness is caused by dissolved calcium hydrogen carbonate (which is removed by boiling). Permanent hardness is caused by dissolved calcium sulfate (which is not removed by boiling).

pls like follow

Answer 2

Answer:

water which doesn't form lather with soap are called hard water .

Permanent hardness of water is due to presence of ca and mg Salt it is not easily removed . Techniques used to remove permanent hardness are EDTA.

EDTA (ethylene diamine tetraacetitic acid )

Temperory hardness is easily removed by heating .