Question

367.5gm of KCIO3 is heated find weight of O2, volume at STP and weight of residue

Answer 1

Answer:

WEIGHT OF O2  IS 144GMS

VOLUME IS 49.4LITRES

RESIDUE WEIGHT IS 223.5

Explanation:

KCLO3----------->KCL+3/2 O2

1MOLE KCLO3 GIVES 1.5 MOLE O2

SO 3MOLE GIVES 9/2 MOLE OF O2

SO 4.5 MOLE O2 WEIGHT 144 GMS

4.5 MOLE OF GAS AT STP HAS 49.5 LITRES

KCL IS THE RESIDUE FOR 3MOLES .....

SO ITS WEIGHT IS 223.5