1.

Calculate the strength in g//L of 10 volume solution of hydrogen peroxide at 273 K and 1 bar pressure. [Report your answer divided by 10]

Answer»


Solution :10 volume solutions of `H_(2)O_(2)` means that 1L of this `H_(2)O_(2)` solution will GIVE 10 L of oxygen at STP
`2H_(2)O_(2)(l)rarrO_(2)(g)+H_(2)O(l)`
`2xx34g""22.7" at STP"`
68g
On the BASIS of above equation 22.7 L of `O_(2)` is produced from 68 g `H_(2)O_(2)` at STP and 10 L of `O_(2)` at STP is produced from `(69xx10)/(22.7)g=29.9g~~30gH_(2)O_(2)`. Therefore, strength of `H_(2)O_(2)` in 10 volume `H_(2)O_(2)` solution `= 30 g/L = 3% H_(2)O_(2)` solution


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