is defined
by
where the
masses refer to nuclear rest masses. Determine from the given data whether the
following reactions are exothermic or endothermic.
(i) 
(ii) 
Atomic
masses are given to be
Answer:
(i) The given reaction is
?(1)
where 
refers
to nuclear masses.
if m
refers to atomic masses, then
Similarly, 
Using
equation (1),
Since Q
value is negative, the reaction is endothermic.
(ii) The
given reaction is
?(2)
where refers
to the nuclear mass. If m refers to the atomic mass, then
and 
from
eqn. (2).
Since Q value is
positive, the reaction is exothermic.
You need to login to perform this action.
You will be redirected in
3 sec
