GATE CE 2020 Set 1 — Question 27
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Environmental Engineering → Water Quality → pH, Turbidity, Hardness & Alkalinity
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Question
An amount of is added to distilled water and the total solution volume is made to one litre. The atomic weights of and are and , respectively. Neglecting the dissociation of water, the of the solution, is
Correct answer
(B) 3.01
Solution
1.Calculate the molar mass of : .
2.Calculate the number of moles of added: .
3.Since the volume is , the concentration .
4.Calculate : .
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