heat of neutralisation of NaOH and HCl is -57.46. The heat of ionisation of water is in KJ is
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It can be seen that the heat of neutralization of strong acid and strong base is almost always the same, i.e. 57.1 KJ no matter what base or what acid is taken.
So, we know that NaOH is a very strong base and HCl is a very strong acid, the het of neutralization is almost equal to the value we expect, which is, 57.1 KJ.
alenbiju2013:
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Answer:
The expression for the neutralization of NaOH and HCl can be represented as:
H
+
+OH
−
⇌H
2
O;ΔH=−57.46kJ
The expression for the ionization of water can be represented as:
H
2
O⇌H
+
+OH
−
;ΔH=+57.46kJ
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