Question

2 34.05 ml of phosphorus vapours weight 0.0625g at 543o c and 1 bar pressure what is molar mass of phosphorous?

Answer 1

let the molar mass of KNO2 is 85g

and KMnO4 is 158 g

here 5×85 g of KNO2 requires 2×158 g of KMnO4 for complete oxidation

11.4 g KNO2 requires,

158×2×11.2/85×5=8.33 g KMnO4