Question

When an element forms an oxide in which oxygen is 20% of the oxide by mass, the equivalent mass of the element will be :

Answer 1

Answer:

Let the total amount of oxide be 100

∴∴ mass of oxygen is 20

∴∴ mass of element is (100-20)=80

∴∴ equivalent mass of element=massofelementmassofoxygenmassofelementmassofoxygen×8×8

=8020=8020×8×8

=32=32

Hence (b) is the correct option