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Adriana Rangel 1A
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Joined: Fri Sep 29, 2017 7:04 am


Postby Adriana Rangel 1A » Fri Feb 09, 2018 2:38 pm

9.55 Write a balanced chemical equation for the formation reaction of (a) NH3(g); (b) H2O(g); (c) CO(g); (d) NO2(g). For each reaction, determine H, S, and G from data in Appendix 2A

When I go to the appendix and I'm looking at the DELTA H standard for NH3, how do I know whether to use the NH3(g) vs NH3(aq) value? Like how do I know H2+N2 form NH3 gas vs aqueous ?

Lucia H 2L
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Joined: Mon Nov 14, 2016 3:00 am
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Re: 9.55?

Postby Lucia H 2L » Fri Feb 09, 2018 3:21 pm

You use the gaseous phase because it is listed as gas in the problem. Aqueous means that it's dissolved in water, so the problem would specifically mention that its an NH3 solution if it wanted you to find the enthalpy of the aqueous form.

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