Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasynumerical

What volume of hydrogen in ml will be liberated at STP by the reaction of Zn on 50 ml of dilute $H_{2} S O_{4}$ of specific gravity 1.3 having purity of 40%?
Report your answer by rounding it upto nearest whole number.

Answer:

6000.00

Solution:

Mass of $H_{2} S O_{4} = \frac{50 \times 13 \times 40}{100} = 26 g$

$Z n + \underset{\underset{o r 1 mole}{98 g}}{H_{2} S O_{4}} \to Z n S O_{4}^{-} + \underset{\underset{a t NTP}{22.4 L}}{H_{2}}$

As 98 gm $H_{2} S O_{4}$ provides $= 22.4 L H_{2}$

So 26 gm $H_{2} S O_{4}$ provides $= \frac{22.4 \times 26}{98}$

$= 5.95 L$

$\approx 6 L$

Stream:NTA_ABHYASSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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