wiz-icon
MyQuestionIcon
MyQuestionIcon
8
You visited us 8 times! Enjoying our articles? Unlock Full Access!
Question

Presence of CaSO4 causes permanent hardness in water. It can be removed by precipitating it as CaCO3 by adding Na2CO3. If the amount of Na2CO3 required to soften 100 L of hard water, which is 200 ppm CaCO3, is x g, then value of x is:

Open in App
Solution

Na2CO3106g+CaSO4CaCO3100g+ Na2SO4106 mL of hard water has = 200g CaCO3100 L = 105 mL of hard water has = 20g CaCO3If hardness is 100g, Na2CO3 required = 106gIf hardness is 20g, Na2CO3 required = 21.2g

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Reactions in Solutions
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon