Chemistry > 2001 > 22
WASSCE
consider the following equation Ag+(aq) + Cl-(aq) → Ag+Cl(s); ∆H = -65.7 kJ mol-1. from the equation, it can be deducted that
A.
direct combination is involved and the reaction is endothermics
B.
a solid is formed and heat is evolved
C.
activation energy is high and catalyst is required.
D.
the reaction is endothermics and occur at high teperature
Answer: B
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