3.2 g of oxygen (At. weight = 16) and 0.2 g of hydrogen (At. wt. = 1) are placed in a 1.12 litre flask at 0°C. The total pressure of the gas mixture will be(a) 1 atm(b) 4 atm(c) 3 atm(d) 2 atmchoose and explain
You are dealing with diatomic oxygen ( molar mass 32g/mol ) and diatomic hydrogen ( 2g/mol ) Mol O2 in flask = 3.2/32 = 0.1 mol Mol H2 in flask = 0.2/2 = 0.1 mol H2 Total moles = 0.2mol
Calculate pressure using gas equation: PV = nRT P * 1.12 = 0.2*0.082057*273 P = 4.480/1.12 P = 4.000 atm