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October 30, 2014

Homework Help: chemistry

Posted by Anonymous on Friday, July 18, 2008 at 6:02pm.

I originally used 1 gram of NaOH. What if I used 2 grams of NaOH. Would that change the heat evolved, Q and change in ethalpy, (delta)H?

Through direct calculation, I see that the Q change by only about 0.1 kcal, but for (delta)H, I see that the value halved(which is expected since the mole of NaOH would be doubled).

However, this is based on the assumption that the change in temperature remains the same. I'm not sure if the temperature will be smaller or larger with an increase in temperature.

Can you help me with this problem? Thanks!

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