Chemistry - Concentration Terms Question with Solution | TestHub

ChemistryConcentration TermsConcentration termMedium2 minPYQ_2013

ChemistryMediumsingle choice

How many grams of concentrated nitric acid solution should be used to prepare $250 mL$ of $2.0 MHNO_{3} ?$ The concentrated acid is $70% HNO_{3}$

Options:

Answer:

Solution:

Molarity $(M) = \frac{wt \times 1000}{mol. wt. \times vol ( mL )}$ $2 = \frac{wt .}{63} \times \frac{1000}{250}$ $wt = \frac{63}{2} g$ wt. of $70%$ acid $= \frac{100}{70} \times 31.5 = 45 g$

Stream:BITSATSubject:ChemistryTopic:Concentration TermsSubtopic:Concentration term

⏱ 2mℹ️ Source: PYQ_2013

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