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AP EAMCET202124 Aug 2021Morning ShiftChemistrySome Basic Concepts of ChemistryActual

In each molecule of carbon tetrachloride, the mass percent of carbon and chlorine respectively are

Options

  1. A76.86 and 23.14
  2. B7.84 and 92.80
  3. C23.14 and 76.86
  4. D78.41 and 9.25

Correct answer

B. 7.84 and 92.80

Step-by-step solution

Mass percentage of a component = Mass of a component Total mass 100 In a molecular of CCl ₄ (carbon tetrachloride), =1 C +4 Cl atoms are present. Atomic mass of C =12.01, Cl =35.5 Molecular mass of CCl ₄=154 Mass % of C = 12.01 154 100=7.79 Mass % of Cl = 4(35.5) 154 100 = 142 154 100=92.7 So, mass % of C and Cl is approximately equal to 7.84 and 92.80 respectively.

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