At stp 1 mole of a gas =22.4l calculate the number of moles of CH4 formed 2.50/22.4=0.1116moles from the reaction above the reacting ratio of H2 to CH4 is 4:1 therefore the moles of H2 reacted is 0.1116 x4 =0.4464moles volume of H2 =0.4464 x 22.4 l =9.99l
