Question

Help ASAP! Will fan and medal :)
CH4 + 4Cl2 --> CCl4 +4HCl
If this reaction generates 2.5 gallons of CCl4, how many pounds of HCl were also generated? The density of CCl4 is 1.5867g/mL.

Answer 1

2.5 gallons of CCl4 -> Liters of CCl4 -> mililiters of CCl4 -> grams of CCl4 -> moles of CCl4 -> moles HCl -> grams of HCl -> pounds od HCl

Answer 2

@Cuanchi
I'm sorry, but I still don't get how I set it up. And how does the density of CCl4 come into play?

Answer 3

The density gives you the mass used (because you are given a volume).

Answer 4

Well first, let’s calculate gallons to moles. In order to solve for this we’ll have to have moles, as well as the mass and set up a ratio. 2.5 gallons of CCl4 = 9.5 liters = 9500 militers = 9500 grams.
Now that we have this information, we can calculate the ratio between the two. 9500 grams of CCl4 were produced, but how does that relate to moles? 9500 grams CCl4 x 1 mole/x grams per molecule of CCl4Use your periodic table to figure out the atomic mass, which is the same as the grams. It’ll end up being 1 x 14.0 (carbon) + 4 times 35.5 (since there are more than one) of Chlorine.
Which adds up to 156 grams. So now we set up the equation. . .
9500 grams CCl4 times 1 mole/156 grams per molecule of CCl4. Divide 9500 by 156, and the grams cancel, and we get 61 moles. (Round to 2 significant figures.)
So 61 moles of CCl4 were produced in this reaction! Fascinating, isn’t it?
Now let’s convert! Look at your equation – for every one mole of CCl4 produced, there’s 4 moles of HCl produced, so we have to set up another ratio of moles to moles, so we can figure out how many HCl moles were produced.
It’ll be 61 moles of CCl4 times 4 moles HCl/1 mole of CCl4, which is essentially 61 x 4 = 240. That’s 240 moles of HCl produced in this reaction! Awesome! Now we have to do a little more converting of moles back to grams. So, taking the equation we used earlier, we can convert it back to grams. For every one mole of HCl, x amount of grams is equal to that. We simply find the atomic mass of both hydrogen and chlorine and add them together, which is 1.01 + 35.5 = 36.51 (round it to 36.5)
So for one mole, it’s 36.5 grams of HCl – plug that into our equation.
240 moles HCl times 36.5 grams HCl/(divided by) 1 mole HCl = 8760 grams, round it to 8800 because two significant figures.
Now we convert grams to pounds. . .
8800 grams = 19 pounds.
So 19 pounds of HCl was produced. Hoped this helped!

Answer 5

Amazing, thank you so much @hoopsandyoyo2017 ! I so appreciate it :)