For an endothermic reaction, energy of activation is Ea and enthalpy of the reaction is ΔH (both of these in KJ/mol). Minimum value of Ea will be
equal to zero
less than ΔH
equal to ΔH
more than ΔH
Which equation is correct for adiabatic process?
Q = + W
ΔQ = 0
ΔE= Q
p + Δ V = 0
Which of the following is the correct option for free expansion of an ideal gas under adiabatic condition?
q = 0, ΔT < 0, w ≠ 0
q = 0, ΔT ≠ 0, w = 0
q ≠ 0, ΔT < 0, w = 0
q =0, ΔT = 0, w = 0
Which is correct for an endothermic reaction?
ΔH is positive
ΔH is negative
ΔE is negative
ΔH = zero
Thermodynamically the most stable form of carbon is
diamond
graphite
fullerenes
coal
Reaction for the formation of NaCI is
N2(g) + CI2(g) → NaCl(s)
Na(s) + 1/2 Cl2(g) → NaCl(s)
Na(g) + 1/2 Cl2(g) → NaCl(s)
Na(g) + Cl2(g) → NaCl(g)
For exothermic reaction
HR = Hp
HR > Hp
Hp >HR
All of these
A process in which the system does not exchange heat with the surrounding is known as
isothermal
isobaric
isochoric
adiabatic
If W is the amount of work done by the system and q is the amount of heat supplied to the system, identify the type of the system
isolated system
closed system
open system
system with thermally conducting walls
Which of the following is not an endothermic reaction?
Dehydrogenation
Ethane to ethene
Combustion of propane
Change of chlorine molecule into chlorine atoms
