Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryEnthalpy of ReactionMedium2 minQB
ChemistryMediumsingle choice
The reaction of magnesium metal with dilute sulphuric acid was used to produce 2.5 moles of hydrogen at 300 K and 1 atm pressure. The magnitude of work done in pushing back the atmosphere is (R = 2 cal/K-mol)
Options:
Answer:
D
Solution:
Mg + H2SO4 → MgSO4 + H2(g). Only the gas expands against the atmosphere: |w| = Δn RT = 2.5 × 2 × 300 = 1500 cal. This is option (d).
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Reaction
⏱ 2mℹ️ Source: QB
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