For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, $\Delta U$…
For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, $\Delta U$ and $w$ correspond to
$\Delta U < 0, w=0$
$\Delta U < 0, w < 0$
$\Delta U>0, w=0$
$\Delta U>0, w>0$
Solution
Bomb calorimeter commonly used to find the heat of combustion of organic substances, consists of a sealed combustion chamber, called a bomb.
The reaction in a bomb calorimeter proceeds at constant volume so, $w=0$ and $\Delta U=q$. Hence, $\Delta U < 0, w=0$.
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