For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter `DeltaU`and`w` correspond to

Options

A. `Delta U lt 0, w = 0`
B. `Delta U= 0, w lt 0`
C. `Delta U gt 0, w = 0`
D. `Delta U lt 0, w gt 0`

Answer

A

Explanation

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 lt 0, w = 0`