Question

1.0 × 10^–2 kg of hydrogen and 6.4 × 10^–2 kg of oxygen are contained in a 10×10^–3 m³ flask at 473 K. Calculate the total pressure of the mixture. If a spark ignites the mixture. What will be the final pressure? 

Answer 1

∴ Total moles of ideal gas = 7

If the mixture ignites and the reaction complexes

Number of moles of H₂ left after reaction 

= 5 – 2 × 2 = 1 

Number of moles of H₂O formed