Question is ⇒ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to, Options are ⇒ (A) 1225, (B) 1335, (C) 1525, (D) 1735, (E) , Leave your comments or Download question paper.

Question is ⇒ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 2O2 → CO2 + 2H2O. Both the reactants and products are in gas phase. ΔH°298 = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to, Options are ⇒ (A) 1225, (B) 1335, (C) 1525, (D) 1735, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°₂₉₈ = - 730 kJ/mole of methane. If the average specific heat of all the gases/vapour is 40 J/mole.K, the maximum temperature rise of the exhaust gases in °C would be approximately equal to
A.	1225 [Wrong Answer]
B.	1335 [Wrong Answer]
C.	1525 [Wrong Answer]
D.	1735 [Correct Answer]
View Answer 4 -2 Explanation:- Answer : D Discuss it below : ??? ???? Said on 2022-03-31 08:21:43 MuReact 1 mol of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH4 + 202 → CO2 + 2H₂O. Both the reactants and the products are in gas phase. AH 298 = - 730 kJ/mol of methane. What is the Mole fraction of water vapor in the product gases and If the average specific heat of all the gases/vapour is 40 J/(mol-K), what is the maximum temperature rise of the exhaust gases in °C. !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c.
283
566
293
141.5

⇒ On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes
1
8
4
2

⇒ The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation
increases with pressure rise.
decreases with increasing pressure.
becomes zero at the critical point.
both (b) & (c).

⇒ The total number of atoms in 8.5 gm of NH₃ is __________ x 10²³.
9.03
3.01
1.204
6.02

⇒ With increase in the temperature of pure (distilled) water, its
pOH decreases and pH increases.
pOH and pH both 4ecreases.
pH and pOH both increases.
pH decreases and pOH increases.

⇒ 1 kgf/cm² is not equal to
1 torr
1 bar
10000 mm wc
100 KPa = 100 000 N/m²

⇒ The unit of specific heat at constant pressure, C_p, in SI unit is
W/m²°C
J/kg°K
W/m°K
J/m³°K

⇒ One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°₂₉₈ = - 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about
0.19
0.33
0.4
0.67

⇒ 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 C_p = 29.1 J/mole.°C and, C_v = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is
13728 J
19206 J
4576 J
12712 J

⇒ Heat of __________ of a fuel is called its calorific value.
formation
combustion
reaction
vaporisation

⇒ Hess's law of constant heat summation is based on conservation of mass. It deals with
equilibrium constant.
reaction rate.
changes in heat of reaction.
none of these.

⇒ The temperature of a gas in a closed container is 27° C. If the temperature of the gas is incresed to 300° C, then the pressure exerted is
doubled.
halved.
trebled.
unpredictable.

⇒ Viscosity of atmospheric air may be about __________ centipoise.
0.015
1.5
15
150

⇒ Volume percent for gases is equal to the
weight percent.
mole percent.
weight percent only for ideal gases.
mole percent only for ideal gases.

⇒ Density of carbon dioxide is __________ kg/Nm³.
44/22400
44/22.4
22.4/44
none of these

⇒ The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.
limiting
real
saturated
normal

⇒ The heat capacity of most substances is greater for the __________ state.
solid
liquid
gaseous
none of these

⇒ Pick out the wrong unit conversion.
1 atm. = 760 mm Hg = 29.92 inch Hg = 14.7 psi = 1.013 bar = 1.013 kgf/cm²
1 kPa = 100 bar
1 mm Hg = 1 torr = 133.3 Pa
-

⇒ If 1 Nm³ of O₂ contains 'N' number of molecules, then number of molecules in 2Nm³ of SO₂ will be
N
N/2
2N
4N

⇒ Molality is defined as the number of gm moles of solute per __________ of solvent.
litre
kg
gm mole
gm

⇒ In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the
solute concentration
temperature
both(a) & (b)
neither (a) nor (b)

⇒ With rise in temperature, the heat capacity of a substance
increases
decreases
remains unchanged
either (a) or (b); depends on the substance

⇒ Normality of a solution does not change with the increase in the
pressure
temperature
solute concentration
dilution of the solution

⇒ Kopp's rule is useful for the determination of
molal heat capacities of gases.
heat capacities of solids.
activation energy.
heat capacities of gases.

⇒ A gaseous mixture contains 14 kg of N₂, 16 kg of O₂ and 17 kg of NH₃. The mole fraction of oxygen is
0.16
0.33
0.66
0.47

⇒ Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is
80.1°C.
less than 80.1°C.
100°C.
greater than 80.1°C but less than 100°C.

⇒ The molecules of a liquid which is in equilibrium with its vapor at its boiling point on an average have equal __________ in the two phases.
potential energy
intermolecular forces
kinetic energy
total energy

⇒ A chemical process is said to occur under unsteady state, if the
inventory changes do not take place.
ratio of streams entering/leaving are independent of time.
flow rates & composition both are time dependent.
none of these.

⇒ Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of
mixing
adsorption
wetting
complete wetting

⇒ Kopp's rule is helpful in finding the
heat capacities of solids.
heat capacities of gases.
molal heat capacities of gases.
activation energy.