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Yuki888 [10]
3 years ago
14

Using the following thermochemical data, what is the change in enthalpy for the following reaction?

Chemistry
1 answer:
Mice21 [21]3 years ago
5 0
In calculating the change in enthalpy in a certain reaction, it is important to remember that it is the sum of the enthapy of formation for the substances involved in the reaction. 

<span>CaO(s)+2HCl(aq)→CaCl2(aq)+H2O(l)                          ΔH= –186kJ 
</span>Ca(OH)2(aq) →  CaO(s)+H2O(l)<span>                                     ΔH= 65.1 kJ
</span>Ca(OH)2(aq) + 2HCl(aq) → CaCl2(aq) + 2H2O(l)       ΔH= -120.9 kJ
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