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[Solved] Complete combustion of 0.858 g of compound X gives 2.64 g of CO2 and 1.26 g of H2O. The lowest molecular mass X can have:

Some Basic Concepts of Chemistry

Last Post by Shivani siva 3 years ago

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11/08/2021 12:09 pm

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Deepak Rock

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Complete combustion of 0.858 g of compound X gives 2.64 g of CO₂ and 1.26 g of H₂O. The lowest molecular mass X can have:

(a) 43 g

(b) 86 g

(d) 172 g

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11/08/2021 12:16 pm

Shivani siva

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Correct answer: (a) 43 g

Explanation:

Moles of C = ⁿCO₂= \(\frac{2.64}{44}\)

= 0.06

Mass of C = 0.72

Mole of H = 2 × Moles of H₂O

= 2 x \(\frac{1.26}{18}\) = 0.14

Mass of H = 0.14

Compound does not contains oxygen.

So, EF → C_0.06H_0.14=> C₃H₁₇

Lowest M.M. = 43

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[Solved] Complete combustion of 0.858 g of compound X gives 2.64 g of CO2 and 1.26 g of H2O. The lowest molecular mass X can have:

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