Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptMiscellaneous/MixedEasy2 minPYQ_2020
ChemistryEasysingle choice

5 g of zinc is treated separately with an excess of
(1)dilute hydrochloric acid and
(2)aqueous sodium hydroxide.
The ratio of the volumes ofH2evolved in these two reactions is

Options:

Answer:
B
Solution:

Zn+2HCl→ZnCl2+H2
Zn+2NaOH→Na2ZnO2+H2
Mole ofZn=Mole of dil.HCl2=Mole of NaOH2
As volume of a gas∝moles of gas
Volume of   H 2  from HCl Volume of H 2 from NaoH = 1 1

Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:Mole ConceptSubtopic:Miscellaneous/Mixed
⏱ 2mℹ️ Source: PYQ_2020

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