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

5.62 g of F2

Step-by-step 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 (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(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(37.99~g~F_2)/(1~mol~F_2)=5.62~g~F_2`

I hope it helps!