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 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 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 milliequivalents of Na_(2)CO_(3) would be required to soften 1 litre of sample ?

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) .

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) .

One litre of a sample of hard water contains 1 mg of CaCl_(2) and 1 mg of MgCl_(2) . Find the total hardness of water in terms of parts of CaCO_(3) per 10^(6) parts of water by mass.

Ca^(2+)" and "Mg^(2+)

Ca^(2+)" and "Mg^(2+)