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Stoichiometry - Engineering

Q1:

A gas mixture contains 6 moles of H2 and 2 moles of N2. If the total pressure of the gaseous mixture is 4 kgf/cm2 ; then the partial pressure of N2 in the mixture will be __________ kgf/cm2 .

A 1

B 2

C 4

D 8

ANS:A - 1

To find the partial pressure of 𝑁2N2​ in the mixture, we need to use Dalton's law of partial pressures, which states that the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of each individual gas. Given:

  • Moles of 𝐻2H2​ = 6
  • Moles of 𝑁2N2​ = 2
  • Total pressure of the mixture = 4 kgf/cm22
To find the partial pressure of 𝑁2N2​, we need to know the mole fraction of 𝑁2N2​ in the mixture. The mole fraction (𝑋𝑖Xi​) of a component 𝑖i in a mixture is defined as the ratio of the number of moles of that component to the total number of moles of all