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Neutralization Reaction

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A quantity of 2 x 102 mL of 0.862 Molar HCl is mixed with 2 x 102 mL of 0.431Molar Ba(OH)2 in a constant pressure calorimeter that has a heat capacity of 453 J/oC.

The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.48oC. For the process

H+(aq) + OH-(aq) --> H2O(L)

the heat of neutralization is -56.2 KJ.

What is the final temperature of the mixed solution?

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Solution Summary

This solution describes how to calculate temperature of a chemical reaction. The skills used in this example can be applied to numerous other chemistry problems.

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The equation for the neutralization is
2 HCl (aq) + Ba(OH)2 (aq) .. . 2 H2O (l) + BaCl2 (aq)
One mole of water is formed from each mole of HCl. There is exactly enough Ba(OH)2 to neutralize all the
HCl. The number of moles of HCl is:
200. mL * (1l/1000ml) ...

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