Answer:
The right choice is CHCl₃
Explanation:
- <u>To find the empirical formula firstly, change the mass to moles.</u>
For Carbon :
no. of moles = (mass / molar mass) = (5.03 g / 12 g/mol )= 0.42 mol
<u><em>For Hydrogen :</em></u>
no. of moles = (mass / molar mass) = (0.42 g / 1 g/mol )= 0.42 mol
<u><em>For Chlorine :</em></u>
no. of moles = (mass / molar mass) = (44.5 g / 35.5 g/mol )= 1.25 mol
The ratio for Carbon and Hydrogen is 1 : 1
0.42 mol / 042 mol =1.00
- <u>
Then find a ratio between the moles.
</u>
The ratio of Chlorine to both Carbon and Hydrogen is 3:1
1.25 mol / 0.42 mol = 2.98 ≅ 3
So the ratio is 1 C : 1 H : 3 Cl.
So, the right choice is CHCl₃
Carbon usually forms four bonds one to Hydrogen and 3 to Chlorine atoms.
Chlorine usually forms one bond to Carbon atom.
Hydrogen usually forms one bond Carbon atom.
