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Stoichiometry

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

Stoichiometry /
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

A. 13728 J
B. 19206 J
C. 4576 J
D. 12712 J

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________? Read More »

Stoichiometry

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

Stoichiometry /
Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

A. 46
B. 92
C. -23
D. -92

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole? Read More »

Stoichiometry

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________?

Stoichiometry /
If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________?

A. Be reduced to 1/4th
B. Increase four times
C. Increase two times
D. None of these

If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will_________________? Read More »

Stoichiometry

At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?

Stoichiometry /
At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________?

A. Decrease in mean free path
B. Increased collision rate among molecules
C. Increase in molecular attraction
D. Increase in average molecular speed

At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to___________________? Read More »

Stoichiometry