Question

write chemical name of an ionic compound that we use to soften hard water​

Answer 1

Na3CO3. 10H2O (sodium carbonate) is used for softening hard water.

Explanation:

• Na3CO3. 10H2O is hydrated sodium carbonate which is used for softening hard water.
• Hard water contains a high content of mineral in it.
• When water passes over through the surfaces of gypsum, chalk, and deposits of limestone then it carries the amounts of these salts with it.
• These slats are made up of carbonates and bicarbonates of calcium and magnesium which are not suitable for health in high content.

Answer 2

Answer:

The chemical name of an ionic compound that we use to soften hard water ​is Sodium carbonate$(Na_2CO_3)$.

Explanation:

• The process of removing the dissolved magnesium and calcium salts causing hardness in water is called softening.

• Sodium carbonate$(Na_2CO_3)$, is also known as washing soda.

• It can soften water that has temporary hardness and it can soften water that has permanent hardness.

• The calcium ions come from the hard water and the carbonate ions from the washing soda.

• Slaked lime$(Ca(OH)_2)$,sodium chloride$(NaCl)$ can also be used to soften hard water.