1.

Iron and steam react according to the following equation

3Fe + 4 H ₂O ? Fe ₃O ₄ + 4H ₂

Assuming no excess reactants are used and the reaction is complete

1.

Atomic and molecular weights Fe = 56 H ₂ = 2 H ₂O= 18 Fe ₃O ₄ = 232

Stoichiometric relation 3Fe + 4 H ₂O ? Fe ₃O ₄ + 4 H ₂

Basis 100 kg hydrogen produced

1.

The amount of iron ( kg) required to produce 100 kg of hydrogen is

1. 168

2. 2900

3. 2100

4. 1050

2.

The amount of iron oxide (kg) produced is

1. 2320

2. 2900

3. 2100

4. 1450

3.

The volume (m ³), H ₂ will occupy at standard conditions if it were an ideal gas is

1. 2240

2. 1120

3. 1184

4. 17950

4.

Vapor pressures of Ethyl acetate are 3.22 kpa and 845.8 kPa at 0 and 160 C respectively. Its vapor pressure at 100 C (kPa) is

1. 183.2

2. 1.87

3. 137.9

4. 27.1

1.

Fe reuired = (168/8) (100) = 2100 kg

Answer is c)

2.

Fe ₃O ₄ produced = (232/8) (100) = 2900 kg

Answer is b)

3.

H ₂ = 100/2 = 50 kmol

1 kmol of an ideal gas occupies 22.4 m ³ volume at standard conditions

Therefore, volume of 50 kmols of H ₂ = 50 22.4 = 1120 m ³