(solved)Question 1.10 of NCERT Class XI Chemistry Chapter 1

In three moles of ethane (C2H6), calculate the following: (i) Number of moles of carbon atoms (ii) Number of moles of hydrogen atoms (iii) Number of molecules of ethane.

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Parveen,

Question 1.10
NCERT Class XI Chemistry

In three moles of ethane (C2H6), calculate the following: (i) Number of moles of carbon atoms (ii) Number of moles of hydrogen atoms (iii) Number of molecules of ethane.

Solution in Detail

(i) 1 molecule of ethane contains 2 atoms of carbon. Hence 1 mol molecule of ethane will have 1 mol x 2 = 2 mol carbon atoms. Therefore, 3 mol ethane will have 3 x 2 mol = 6 mol carbon atoms (Answer).

(ii) Similarly, 3 mol of ethane contains 3 x 6 = 18 mol hydrogen atoms (Answer).

(iii) 1 mol of ethane has 6 x 10^23 molecules. Hence 3 mol will have 3 x (6 x 10^23) = 18 x 10^23 molecules (Answer)

Video Explanation
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