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AP EAMCET202125 Aug 2021Evening ShiftChemistrySome Basic Concepts of ChemistryActual

0.765 ~g of an acid gives 0.535 ~g of CO ₂ and 0.13 ~g of ₂ O , then ratio of percentage of C and H is

Options

  1. A19 : 2
  2. B18 : 11
  3. C20 : 17
  4. D1 : 7

Correct answer

A. 19 : 2

Step-by-step solution

Given, mass of CO ₂=0.535 Mass of compound =0.765 ~g Now, percentage of carbon aligned & = weight molecular wt. mass of CO ₂ mass of compound 100 & = 12 44 0.535 0.765 100 C & =19.07 % & =19 % aligned Similarly, mass of H ₂ O =0.13 ~g mass of compound =0.765 ~g Now, percentage of hydrogen = 2 18 0.138 0.765 100 % H =2.00 % Ratio of C and H is 19: 2 Hence, the ratio of percentage of C and H is 19: 2 .

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