1.

100mL of om at STP was passed through 100 ml of 10 volume H_(2)O_(2)solution. What is the volume strength ofH_(2)O_(2) after the reaction?

Answer»

9.5
9
4.75
4.5

Solution :`H_2O_2+ O_3 to H_2O + 2O_2`
initial `M_(H_2O_2) = 10/11.2 = 10/11.2 M`
NUMBER of MOLES of `O_2 = 0.1/22.4`
number of moles of `O_2 = 10/11.2 xx 0.1`
ACCORDING to stoichiometric equation
on mole of `H_2O_2` produce 1 mole of `O_3` number of moles of `H_2O_2` consumed
`=1/224," remains" = 19/224`
onemolarity = 11.2 (W/V)%
`19/224 xx 0.1 --------- ?`


Discussion

No Comment Found