Question

Please solve...the ticked question..4.2sum pls solve...​

Answer 1

Answer:

So on passing steam over 21 g of Iron will liberate ,1.0027 g of Hydrogen gas.

3Fe( red hot ) + 4H2O →Fe3O4 + 4H2↑

.°. 3 moles Fe gives 4 moles H2 ;

→ 56×3 gm Fe gives 8×1 gm H ;

→ 1 gm Fe gives (8×1)/(56×3) gm H ;

.°. 21 gm Fe gives {(8×1)×21/(56×3)} gm H ;

i,e. Hudrgen produced = 1 gm ( Ans )