A closed vessel having capacity 200mL is filled with hydrogen gas at STP.Calculate
i) Number of moles of hydrogen gas filled in the vessel.
Answers
Answered by
3
we know that 22400mL of hydrogen = 1 mole
therefore 200mL = 1/112 mole
Answered by
3
PV = n RT
n/V = P/RT = 1*10⁵ Pa /(8.3144 J /°K/mol * 273.15⁰K) = 0.044034 moles/Litre
n = 0.044034 *200/1000 = 0.0088 moles
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often we use the rule that 1 mole of an ideal gas occupies 22.4 litres at STP. So 200mL of Hydrogen (assuming ideal gas behaviour) contains:
1/22.4 * 200/1000 = 0.0089 moles.
n/V = P/RT = 1*10⁵ Pa /(8.3144 J /°K/mol * 273.15⁰K) = 0.044034 moles/Litre
n = 0.044034 *200/1000 = 0.0088 moles
======================
often we use the rule that 1 mole of an ideal gas occupies 22.4 litres at STP. So 200mL of Hydrogen (assuming ideal gas behaviour) contains:
1/22.4 * 200/1000 = 0.0089 moles.
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