Mention the types of water and what causes temporary hardness of water
Answers
Answered by
1
Their are 7 types of water which are:
1) tap water
2) mineral water
3) spring water
4) well water
5) purified water
6) distilled water
7) sparkling water
Dissolved calcium & magnesium salts in the water causes hardness - there are two types:
Temporary hardness - caused by the presence of bicarbonate salts; this can be removed by either boiling the water, which causes the salts to decompose into insoluble carbonates, or by treating with calcium hydroxide (which also results in the carbonate salt forming & precipitating out of solution)
Permanent hardness - due to the presence of sulphate & chloride salts. These don’t decompose on heating, so have to be removed by chemical means (usually via ion-exchange resins or water softeners)
1) tap water
2) mineral water
3) spring water
4) well water
5) purified water
6) distilled water
7) sparkling water
Dissolved calcium & magnesium salts in the water causes hardness - there are two types:
Temporary hardness - caused by the presence of bicarbonate salts; this can be removed by either boiling the water, which causes the salts to decompose into insoluble carbonates, or by treating with calcium hydroxide (which also results in the carbonate salt forming & precipitating out of solution)
Permanent hardness - due to the presence of sulphate & chloride salts. These don’t decompose on heating, so have to be removed by chemical means (usually via ion-exchange resins or water softeners)
Similar questions