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Mass of HBr formed from SO2 and Br2 in water

Hydrogen bromide can be produced by a reaction among bromine, sulfur dioxide, and water as follows...

S02 + Br2 +H2O (arrow) 2HBr + H2SO4

If 250 grams of SO2 and 650 grams of Br2 react in the presence of excess water, what mass of HBr will be formed?

Solution Preview

SO2 + Br2 + H2O ------> 2 HBr + H2SO4

Check to make sure the equation is balanced.
Is it?
No.
Everything is fine except the number of H and O. Therefore, we fix it like this:

SO2 + Br2 + 2 H2O ------> 2 HBr + H2SO4

Now, it's balanced.
Check to make sure.

Now, we can answer the question. If 250 grams of SO2 and 650 grams of Br2 react in the presence of excess water, what mass of HBr will be formed?

First, we need to remember that when we do these types of stoichiometric problems, that we ALWAYS convert ...

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