I need a genius for this electrolysis question!?

28A for 23 hrs.=2 318 400 coulombs= 2318400/96500=24.024 faradays. The Cr ion has a charge of +3 so 24.024/3=8.008 moles of Cr is deposited, weighing 8.008x52=416.416 grams. Cl ions have 1 -ve charge so 24.024 moles of Cl=12.012 moles of Cl2 are released. At STP this would occupy 12.012x22.5=270.27 litres. But at this T and P it would occupy 270.27x 484/(2.39x 288)=190.04 litres. 484 and 288 are 211C and standard temp. expressed in K.