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Question

A welding fuel gas contains carbon and hydrogen only. Burning a small sample of it in oxygen gives 3.38 g carbon dioxide, 0.690 g water and no other products. A volume of 10.0 L (measured at STP) of this welding gas is found to weigh 11.6 g. Calculate: (i) empirical formula, (ii) molar mass of the gas, and (iii) molecular formula.

Options :

  1. (i) C2H4, (ii) 26g, (iii) C2H2

  2. (i) CH2, (ii) 26g, (iii) C2H2

  3. (i) CH, (ii) 28g, (iii) C2H2

  4. (i) CH, (ii) 26g, (iii) C2H2

Show Answer

Answer :

(i) CH, (ii) 26g, (iii) C2H2

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