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March 12, 2026, 03:57:44 am
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Author Topic: How do we know this?  (Read 575 times)  Share 

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kenhung123

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How do we know this?
« on: March 17, 2010, 02:57:05 pm »
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When H2SO4 reacts with Zn which is most unlikely to form:

H2S

SO2

SO3

H2

ZnSO4+H2 can be the products so I only know H2 definitely is likely how do you test which ones are possible or not?
« Last Edit: March 17, 2010, 03:14:41 pm by kenhung123 »
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fady_22

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Re: How do we know this?
« Reply #1 on: March 17, 2010, 03:19:24 pm »
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I would say SO3.
The reaction is a redox reaction. Zinc will be oxidised, and so the sulfur must be reduced. Using oxidation numbers, you can see that only SO3 has an oxidation number for sulfur lower or equal (which it is in this case) to the original oxidation number, and so is not a reduced form of SO32-.

I hope that makes sense!
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kenhung123

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Re: How do we know this?
« Reply #2 on: March 17, 2010, 08:35:02 pm »
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Oh that makes sense. Thanks for the great explanation
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