Midterm Q.3B

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Savannah Mance 4G
Posts: 107
Joined: Fri Aug 30, 2019 12:17 am

Midterm Q.3B

Postby Savannah Mance 4G » Sat Mar 14, 2020 9:08 pm

Can someone explain this problem and how the Le Chatlier's principle helps solve for what combination of HCl and NaOH would produce the largest change in temperature?

Vincent Leong 2B
Posts: 207
Joined: Fri Aug 09, 2019 12:15 am

Re: Midterm Q.3B

Postby Vincent Leong 2B » Sat Mar 14, 2020 9:19 pm

I think it's less of Le Chateliers and more of a molecular understanding of the rxn. If you have a high concentration, low volume of acid and base reacting, imagine the H+ and OH- reacting. If you have a higher concentration of either acid or base, you have more moles of H+ and OH- reacting. If you have a small volume for both, that means there will be more collisions or possible interactions in such a confined space. This tells you that in terms of reacting, the H+ and OH- will react a lot as their possibilities of collision are increased and thus would have a greater Delta T because giving off heat in the process of these collisions.

Zoya Mulji 1K
Posts: 105
Joined: Thu Jul 11, 2019 12:15 am

Re: Midterm Q.3B

Postby Zoya Mulji 1K » Sat Mar 14, 2020 9:48 pm

a higher difference in concentrations would mean that a reaction between the two would probably be stronger and have a greater change in temperature.

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