Chemistry - Concentration Terms Question with Solution | TestHub

ChemistryConcentration TermsConcentration termEasy2 minPYQ_2020
ChemistryEasysingle choice

Concentrated nitric acid used for laboratory works is68%nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of solution is 1.504 g mL-1?

Options:

Answer:
B
Solution:

68% mass of HN O 3 means 100 g solution contains 68 g HN O 3

∴Volume ofsolution = wt. of solution / density =1001.504 = 66.49 mL 

Molarity M=mole of HNO3volume of solution in litre 

=68 ×100063×66.49=16.23M

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Concentration TermsSubtopic:Concentration term
⏱ 2mℹ️ Source: PYQ_2020

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