Home
Class 12
CHEMISTRY
A sample of hard water is found to conta...

A sample of hard water is found to contain 40 mg `Ca^(+2)` ion per litre. The amount of washing soda `(Na_2 CO_3)` required to soften 5 litres of this sample would be :

Text Solution

Verified by Experts

`0.059 ` ppm of `Ca^(2+)`
Promotional Banner

Similar Questions

Explore conceptually related problems

A sample of hard water is found to contain 40 mg of Ca^(2+) ions per litre. The amount of washing shoda (Na_(2)CO_(3)) required to soften 5*0 L of the sample would be

A sample of hard water contains 20 mg of Ca^(2+) ions per litre. How many millimoles of Na_(2)CO_(3) would be requried to soften 1 L of the sample. Also calculate the mass of Na_(2)CO_(3) .

Calculate the amount of 95% pure Na_(2)CO_(3) required to prepare 5 litre of 0.5 M solution.

A sample of hard water is found to contain 50mg of CaSO_4 in 12kg of sample.Calculate the hardness of the sample in terms of ppm of CaSO_4 .

One litre hard water contains 12.00 mg Mg^(2+) millieqivalent of washing soda required to remove its hardness is

1L of pond water contains 20mg of Ca^(2+) and 12mg of mg^(2+) ions. What is the volume of a 2N Na_2 CO_3 solution required to soften 5000L of pond water ?

A sample of hard water contains 1 mg CaCl_2 and 1 mg MgCl_2 per litre. Calculate the hardness of water in terms of CaCO_3 present in per 10^(6) parts of water.

1L of pond water contains 20mg of Ca^(2+) and 12mg "of" Mg^(2+) ions . What is the volume of a 2N Na_(2)CO_(3) solution required to soften 5000L of pond water?

A sample of hard water contains 122 p p m of HCO_(3)^(ɵ) ions,. What is the minimum weight of CaO required to remove ions completely from 1 kg of such water sample?

A sample of hard water contains 1 mg CaCl_2 and 1 mg MgCl_2 per litre. Calculate the hardness of water in terms of CaCO_3 present in per 10^(6) parts of water. (a). 2.5 ppm (b). 1.95 ppm (c). 2.15 ppm (d). 195 ppm