Question

how many milli moles of CaO is required to remove hardness caused by Mg(HCO3)2 from 2l of water with hardness 200 ppm

Answer 1

Answer:

the green coloring matter found mainly in the chloroplasts of plants that absorbs energy from sunlight to produce carbohydrates from carbon dioxide and water during photosynthesis. chlorophyll.

Answer 2

Explanation:

Mass of Ca(HCO

3

)

2

in the water is:

=1.62×1000000

=1620000g=1620kg

Reaction involved in the removal of hardness may be given as:

162kg

Ca(HCO

3

)

2

+

56kg

CaO

→2CaCO

3

+H

2

O

∵ 162 kg Ca(HCO

3

), require 56kgCaO

∴ 1620 kg Ca(HCO

3

)

2

will require 560kgCaO.