Home/ Questions/Q 457249
Next
In Process
Feroz Singh Dube
Asked: 2022-11-01T19:06:34+05:30 In:

Complete combustion of 0.858 g of compound X gives 2.63 g of `CO_(2)` and 1.28 g of` H_(2)`O. The lowest molecular mass X can have
A. (a)43 g
B. (b)86 g
C. (c )129 g
D. (d)172 g

Complete combustion of 0.858 g of compound X gives 2.63 g of `CO_(2)` and 1.28 g of` H_(2)`O. The lowest molecular mass X can have
A. (a)43 g
B. (b)86 g
C. (c )129 g
D. (d)172 g
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – A
    `%C=12/44xxW_(CO_(2))/Wxx100=12/44xx2.63/0.858xx100=83.6%`
    `%H=2/18xxW_(H_(2)O)/Wxx100= =2/18xx1.28/.858xx100=16.4%`
    `{:(,%(a),At.wt.(b),a//b,Ratio),(C,83.6,12,6.96,1),(H,16.4,1,16.4,2.3):}`
    `C_(3)H_(7)=12xx3+7=43 g`.

    • 0