Question

3) Calculate carbonate and non-carbonate hardness
mg per liter of a sample water containing
dissolved salts as given below
Ca(HCO3)2 - 40.5 mg/lit
Caso, - 68 mg/lit
CaCl2 - 8.0 mg/lit
MgSO, -6,0 mg/lit
MgCl2 38 g lit
Silica - 6 mg/lit​

Answer 1

The carbonate hardness of the water sample is equal to 40.5 mg/litre. The non-carbonate hardness of the water sample is equal to 120 mg/litre.

Given:

The amount of salts dissolved in the water sample are:

Ca(HCO₃)₂ = 40.5 mg/litre

CaSO₄ = 68 mg/litre

CaCl₂ = 8.0 mg/litre

MgSO₄ = 6.0 mg/litre

MgCl₂ = 38 mg/litre

Silica (SiO₂) = 6 mg/litre

To Find:

The carbonate and non-carbonate hardness.

Solution:

→ The carbonate hardness is defined as the measure of the Carbonates and Bicarbonates salts of Magnesium and Calcium dissolved in the water sample.

∴ Mass of Carbonates and Bicarbonates dissolved = 40.5 mg/litre

→ The carbonate hardness of the water sample is equal to 40.5 mg/litre.

→ The non-carbonate hardness is defined as the measure of the Sulphates and Chloride salts of Magnesium and Calcium dissolved in the water sample.

∴ Mass of Sulphates and Chlorides dissolved = 68 + 8 + 6 + 38

∴ Mass of Sulphates and Chlorides dissolved = 120 mg/litre

→ The non-carbonate hardness of the water sample is equal to 120 mg/litre.

Therefore the carbonate hardness of the water sample is equal to 40.5 mg/litre. The non-carbonate hardness of the water sample is equal to 120 mg/litre.

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Answer 2

Answer:

The carbonate hardness of the water sample is adequate forty five mg/litre.

The non-carbonate hardness of the water sample is adequate a hundred and twenty mg/litre.

Explanation:

Given :

Silica (SiO₂) = $6 mg/litre$

CaSO₄ = $68 mg/litre$

Ca(HCO₃)₂ = $40.5 mg/litre$

MgSO₄ = $6.0 mg/litre$

MgCl₂ =$38 mg/litre$

CaCl₂ = $8.0 mg/litre$

To Find : The carbonate and non-carbonate hardness mg/litre of sample water containing dissolved salts.

Detailed Explanation :

The carbonate hardness is outlined because the live of the Carbonates and Bicarbonates salts of metallic element and atomic number 20 dissolved within the water sample.

Mass of Carbonates and Bicarbonates dissolved = forty five mg/litre.

The carbonate hardness of the water sample is adequate forty five mg/litre.

The non-carbonate hardness is outlined because the live of the Sulphates and Chloride salts of metallic element and atomic number 20 dissolved within the water sample.

Mass of Sulphates and Chlorides dissolved = sixty eight + eight + half-dozen + thirty eight

Mass of Sulphates and Chlorides dissolved = a hundred and twenty mg/litre

The non-carbonate hardness of the water sample is adequate a hundred and twenty mg/litre.

So, the carbonate hardness of the water sample is adequate forty five mg/litre.

And the non-carbonate hardness of the water sample is adequate a hundred and twenty mg/litre.

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