When one mole of zinc dust and one mole of sulphuric acid react in a bomb calorimeter, then Δ U and w correspond to

Question

When one mole of zinc dust and one mole of sulphuric acid react in a bomb calorimeter, then Δ U and w correspond to (A) Δ U>0,w=0 (B) Δ U < 0,w=0 (C) Δ U=0,w=0 (D) Δ U < 0,w>0

Tardigrade Admin · Accepted Answer

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

Δ U = q = - v e

(exothermic reaction) .

Δ U < 0, w = 0

Q. When one mole of zinc dust and one mole of sulphuric acid react in a bomb calorimeter, then $Δ U$ and $w$ correspond to

$Δ U > 0, w = 0$

$Δ U < 0, w = 0$

$Δ U = 0, w = 0$

$Δ U < 0, w > 0$

Q. When one mole of zinc dust and one mole of sulphuric acid react in a bomb calorimeter, then ΔU and w correspond to

ΔU>0,w=0

ΔU<0,w=0

ΔU=0,w=0

ΔU<0,w>0

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 ΔU=q=−ve (exothermic reaction) . ΔU<0,w=0

Q. When one mole of zinc dust and one mole of sulphuric acid react in a bomb calorimeter, then $Δ U$ and $w$ correspond to

$Δ U > 0, w = 0$

$Δ U < 0, w = 0$

$Δ U = 0, w = 0$

$Δ U < 0, w > 0$