4g H2 and 127g I2 are mixed & heated in 10 lit closed vessel until equilibrium is reached. If the equilibrium concentration of HI is 0.05 M, total number of moles present at equilbrium is

HIeq=0.05 M, V=10 lit;    nHIeq=0.5 ;1 mole of Hydrogen gives 2 moles of HI'X1' moles of Hydrogen gives 0.5 moles of HI.Number of moles of Hydrogen reacted (X1) = 0.25Number of moles of Iodine reacted also will be 0.25Total moles at equilibrium = 1.75+0.25+0.5Total moles at equilibrium = 2.5