Homework Question H.5 (c)

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Anokhi Patel 2B
Posts: 76
Joined: Fri Aug 09, 2019 12:17 am

Homework Question H.5 (c)

Postby Anokhi Patel 2B » Fri Oct 04, 2019 10:21 am

Can someone help me balance this chemical equation:

NaCl(aq) + SO3(g) + H2O(l) -------> Na2SO4(aq) + HCl(aq)

I tried multiple approaches, but I can never get the oxygen to equal out.

Thank you.

Juliet Stephenson 4E
Posts: 100
Joined: Wed Sep 18, 2019 12:21 am

Re: Homework Question H.5 (c)

Postby Juliet Stephenson 4E » Fri Oct 04, 2019 10:40 am

Hi Anokhi,
This is what worked for me:
We start with NaCl + SO3 + H2O --> Na2SO4 + HCl. Hydrogen and Sodium are unbalanced. Oxygen is already balanced because it has three moles from SO3 and 1 mole from H2O, which corresponds to the 4 moles of Oxygen in Na2SO4. To balance Hydrogen and Sodium, I'll add stoichiometric coefficient to NaCl in the reactants and HCl in the products.
2NaCl + SO3 + H2O --> Na2SO4 + 2HCl.

If we test this we find:
Reactants Products
2 moles Na 2 moles Na
2 moles Cl 2 moles Cl
1 mole S 1 mole S
4 moles O 4 moles S
2 moles H 2 moles H

Posts: 85
Joined: Wed Sep 18, 2019 12:19 am

Re: Homework Question H.5 (c)

Postby 605136321 » Sat Oct 05, 2019 12:51 pm

a useful tool to help check if you're correct is:


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