Question

What is the mass of the Cl in 5.56g of CCl2F2

Answer 1

Step by step explanation :

$\textbf{\large Mass of }\bf CCl_2F_2= 5.56 g \:$

Molar mass : Molar mass of an element or compound represents that the total mass of 6.022*10²³ (Avogadro's number) elements or compounds.

It is used in stoicheometric calculations in chemistry and physics.

Molar mass of carbon = 12.01 g per mol

Molar mass of chlorine = 35.45 g per mol

Molar mass of fluorine = 19 g per mol

So

$\textbf{\large Molar mass of }\bf CCl_2F_2= \\ \bf 12.01 + (2 \times 35.45) +( 2 \times 19) = 120.91 g$

So number of moles in 5.56 g of given compound :

$\frac{5.56}{120.91} = 0.046 \: moles$

As we can see that

$\textbf{1 mole of } \bf \: CCl_2F_2= 120.91 g \textbf{ has 70.9 g}Cl$

So,

$\textbf{1 gram of } \bf \: CCl_2F_2 \: has= \frac{70.9}{120.91} Cl = 0.5863 \: g$

So

$\textbf{5.56 gram of } \bf \: CCl_2F_2 \: has= \frac{5.56 \times 70.9}{120.91} Cl =5.56 \times 0.5863 \: g = 3.26g$

So,

Mass of Cl in 5.56 g of compound = 3.26 g