SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A 0.1 mol dm-3nitric acid solution shows a pH value of 1.0.What volume of water must be added to 90.0 cm3 of this solution to obtain a final pH value of 2?
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10.0 cm3
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180.0 cm3
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810.0 cm3
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900.0 cm3
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Explanation:
Detailed explanation-1: -The pH of a 0.1 molar solution of the acid HQ is 3.
Detailed explanation-2: -In one litre of 0.1 M acetic solution, one millimole of HCl is added. The pH of the solution is: (Ka(CH3COOH)=2×10−5) (log 2 = 0.3, log 3 = 0.5, log 5 = 0.7)
Detailed explanation-3: -) in an aqueous solution. to give 1 mole of Hydrochloric acid – HCl. Hence, the answer is – option (d) – the pH of 0.01 M solution of HCl is 2.
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