Vaporisation of water, dissolution of KNO3 in water, dissolution of NaOH in water, Melting of ice 2
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Ammonium chloride
HCl
(l)
+H
2
O
(l)
→HCl
(aq)
+ Heat (exothermic)
(B) NaOH+H
2
O→Na
+
+OH
−
+H
2
O+ Heat (exo)
(C) Na
(s)
+H
2
O→NaOH+ Heat (exo)
(D) AlCl
3
+H
2
O→Al(OH)
3
+3HCl (endo)
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