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A sample of gaseous hydro carbon occupying 1 lit at NTP. When completely burnt in air produced 1.964g CO_(2) and 1.607 g H_(2)O. Calculate the volume of O_(2) (lit) at NTP required for its combustion.

Answer»


Solution :Wt PF oxygen in `CO_(2)`, `W_(O)=(32)/(44) xx W_(CO_(2))=(32)/(44)xx1.964=1.4284`
Wt. of oxygen in `H_(2)O`, `W_(O)=(16)/(18) xx W_(H_(2)O)=(16)/(18) xx 1.607=1.4284`
Total Wt of oxygen = 2.857 G, `C_(STP)=(2.857g)/(32g) xx 22.4 l=2` LITRE


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