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September 21, 2025, 01:13:10 pm

Author Topic: help with balancing half equations  (Read 839 times)  Share 

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Comatose

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help with balancing half equations
« on: October 09, 2011, 12:50:20 pm »
0
hey guys just few questions with chemistry
iive shown my working with the book answer too.
can someone show me where im going wrong? cheers



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REBORN

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Re: help with balancing half equations
« Reply #1 on: October 09, 2011, 12:51:11 pm »
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Cancel out your H+'s on both sides.
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Comatose

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Re: help with balancing half equations
« Reply #2 on: October 09, 2011, 12:58:16 pm »
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why do we cancel out the H+'s? it says cancel out the electrons OH RIGHT H+ is an electron yeah?
that explains q1. but what about q2?
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Re: help with balancing half equations
« Reply #3 on: October 09, 2011, 01:00:02 pm »
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No...

H+ is a proton.

You have ...... + 8H+ ..... ----> ...... + 6H+

This is equivalent to having 2H+ on the left hand side.
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Russ

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Re: help with balancing half equations
« Reply #4 on: October 09, 2011, 01:00:29 pm »
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You can cancel H+ out when it's on both sides for reasons that aren't particularly important. Think of it like balancing a maths equation. H+ is also definitely not an electron (it has none, it's just a proton)

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Re: help with balancing half equations
« Reply #5 on: October 09, 2011, 01:06:28 pm »
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1. H+ isn't an electron, it's a proton
But since there's H+ on either side of the equation you can cancel it out (works for any other molecule too)

2. Charge on LHS: +12. Charge on RHS: +6
Hence you need to add 6 electrons on the LHS.
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Comatose

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Re: help with balancing half equations
« Reply #6 on: October 09, 2011, 01:06:48 pm »
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awkward my bad haha
thanks alot guys
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