The degree of a hardness of a sample of water containing 6mg of mgso4 per kg is
Answers
Answer:
Given, 1 kg of water contains 24 mg of MgSO4.
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO4
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO41 mole of MgSO4=1 mole of CaCO3
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO41 mole of MgSO4=1 mole of CaCO3120 g of MgSO4=100 g of CaCO3
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO41 mole of MgSO4=1 mole of CaCO3120 g of MgSO4=100 g of CaCO324 g of MgSO4=(x) g of CaCO3
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO41 mole of MgSO4=1 mole of CaCO3120 g of MgSO4=100 g of CaCO324 g of MgSO4=(x) g of CaCO3So, x=12024×100=20
Given, 1 kg of water contains 24 mg of MgSO4.So 1 kg=1000 g of water.1 million grams of water =1000×1000 g contains 24 mg×1000=24 g of MgSO41 mole of MgSO4=1 mole of CaCO3120 g of MgSO4=100 g of CaCO324 g of MgSO4=(x) g of CaCO3So, x=12024×100=20So, degree of hardness =20 ppm
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The degree of hardness of water sample is 5 ppm
Explanation:
The hardness of water is the concentration of multivalent cations
1 kg of water = 10⁻³ m³ of water = 1 lt of water
Wt of MgSO₄ = 6 mg
Molecular weight of MgSO₄= 120
Now,
Gram equivalents of MgSO₄ = Gram equivalents of CaCO₃
Weight of MgSO₄/Equivalent Weight of MgSO₄= Weight of CaCO₃/Equivalent weight of CaCO₃
or, (6 × 10⁻³)/(120/2) = Weight of CaCO₃/(100/2)
or, 10⁻⁴ = Weight of CaCO₃/50
or, Weight of CaCO₃ = 50 x 10⁻⁴
= 5 × 10⁻³ gram
= 5 mg
Thus, the hardness as of CaCO3 = 5 mg/lt = 5 ppm
Therefore, the degree of hardness of water sample = 5
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