For the reaction of one mole of zinc dust with one mole of s... | CHEMISTRY - APPLICATIONS | SolveeIt | Solveeit

Today, August 18

Question

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

A

$\Delta U < 0,w = 0$

B

$\Delta U = 0,w < 0$

C

$\Delta U > 0,w = 0$

D

$\Delta U < 0,w > 0$

Answer

$\Delta U < 0,w = 0$

Explanation

Solution

Bomb calorimeter is commonly used to find the heat of combustion of organic substances which consists of a sealed combustion chamber, called a bomb. If a process is run in a sealed container then no expansion or compression is allowed, so w = 0 and $\Delta$ U = q.

$\Delta$ U < 0, w = 0