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The Q value of a nuclear reaction A+b to...

The Q value of a nuclear reaction `A+b to C+d` is defined by `Q=[m_(A)+m_(b)-m_(C )-m_(d)]c^(2)` where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reactions and state whether the reactions are exothermic or endothermic.
`._(1)^(1)H+ ._(1)^(3)H to ._(1)^(2)H+._(1)^(2)`
Atomic masses are given to be
`m(._(1)^(2)H)=2.014102 u`
`m(._(1)^(3)H)=3.016049 u`
`m(._(6)^(12)C)=12.000000 u`
`m(._(10)^(20)Ne)=19.992439 u`

Text Solution

Verified by Experts

(i) Q = –4.03 MeV, endothermic
(ii) Q = 4.62 MeV, exothermic
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