WAEC - Chemistry (2007 - No. 17)
In which of the following compound (s) will heat be absorbed on adding water?
l. KNO\(_3\) II. Concentrated H\(_2\)SO\(_4\) III. NH\(_4\)CI
I only
lll only
l and lll only
ll and lll only
Giải thích
KNO\(_3\) and NH\(_4\)Cl both undergo endothermic.