Question

how many grams of F2 are needed to react with 3.50 grams of Cl2 Equation needed for question- Cl2+3F2-->2ClF3 please explain how to get the answer.

Answer 1

Answer:

5.62 g of F2

Explanation:

We have to start with the chemical reaction:

$Cl_2~+~3F_2~-->~2ClF_3$

We have a balanced reaction, so we can continue with the mol calculation. For this, we need to know the molar mass of $Cl_2$  (70.906 g/mol), so:

$3.5~ g~Cl_2 \frac{1~mol~Cl_2}{70.906~g~Cl_2}=0.049~mol~Cl_2$

Now, with the molar ratio between $Cl_2$  and $F_2$  we can convert from moles of $Cl_2$  and $F_2$  (1:3), so:

$0.049~mol~Cl_2\frac{3~mol~F_2}{1~mol~Cl_2}=0.148~mol~F_2$

Finally, with the molar mass of $F_2$ we can calculate the gram of $F_2$ (37.99 g/mol), so:

$0.148~mol~F_2\frac{37.99~g~F_2}{1~mol~F_2}=5.62~g~F_2$

I hope it helps!