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Organic Chemistry - Some Basic Principles and TechClass 11thChemistryNcert Solutions Chemistry Class 11th

120g of an organic compound that contains only carbon and hydrogen gives 330g of CO2 and 270g of water on complete combustion. The percentage of carbon and hydrogen, respectively are

Option 1 - <p>25 and 75</p>
Option 2 - <p>40 and 60</p>
Option 3 - <p>60 and 40</p>
Option 4 - <p>75 and 25</p>
3 Views|Posted 7 months ago
Asked by Shiksha User
1 Answer
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7 months ago
Correct Option - 4
Detailed Solution:

Number of moles of C = Number of moles of CO2 = 3 3 0 4 4 moles

Number of moles of H = 2 * no. of moles of H2O = ( 2 7 0 1 8 * 2 ) moles

Mass of C =  3 3 0 4 4 * 1 2 gm = 90 gm

Mass of H =  2 7 0 1 8 * 2 * 1 g m = 3 0 g m

%     o f       C = 9 0 1 2 0 * 1 0 0 % = 7 5 % %     o f       H = 3 0 1 2 0 * 1 0 0 % = 2 5 %  

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Chemistry Ncert Solutions Class 11th 2023

Chemistry Ncert Solutions Class 11th 2023

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