Changes in a system from an initial state to the final state were made by a different manner that Î”H remains same but q change..
In order to decompose 9 g water 142.5 kJ heat is required. Hence, the enthalpy of formation of water is
Which of the following are not state functions
Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be
How many joules of heat are absorbed when 70.0 g of water is completely vaporised at its boiling point ?
Mark the correct statement
Which of the following is true for an adiabatic process
The heat of combustion of carbon to CO2 is - 393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxyge..
Which of the following units represent the largest amount of energy
If a refrigerators door is opened,then we get
Energy equivalent to one erg, one joule and one calorie is in the order
A reaction occurs spontaneously if
A gas undergoes a thermodynamical process but the volume of the gas does not change. What is the nature of this process ?
One calorie is equal to
The cooling in refrigerator is due to
For the cyclic process
Internal energy does not enclude
The temperature of the system decrease in an
Among them intensive property is
In thermodynamics which one of the following is not an intensive property
Point out the wrong statement in relation to enthalpy
Conditions of standard state used in Thermochemistry is
Which of the following is not a state function
Calculate the amount of heat evolved when 500 cm^3 of 0.1 M HCl is mixed with 200 cm^3 of 0.2 M NaOH.
Which of the following is the correct option for free expansion of an ideal gas under adiabatic condition
The bond energy (in kcal mol^-1) of C-C single bond is approximately
For an isolated system,
Î”U = 0, then
It is general principle that the less energy a system contains, it is
The process, in which no heat entres or leaves the syatem, is termed as
a pistol filled with 0.04 mol of an ideal gas expands
The relation between H and U is
the vapour pressure of acetone at 20 degree C is 185 torr. when 1.2 g of a non - volatile
Hesss law is based on
In an adiabatic process
The temperature of the system decreases in an
Which of the following is an intensive property ?
Internal energy is sum of
In an isothermal process
If one mole of ammonia and one mole of hydrogen chloride are mixed in a closed container to form ammonium chloride gas, then
An adiabatic process occurs in
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