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An ideal gas expands isothermally from 10–3 m3 to 10–2 m3 at 300 K against a constant pressure of 105 N m–2. The work done on the gas is (Odisha NEET 2019)
Which of the following expressions regarding entropy is not correct? (a) system q S T (b) system total surrounding S S S (c) final initial S S S (d) total system surrounding S S S
The entropy change when two moles of ideal monoatomic gas is heated from 200°C to 300°C reversibly and isochorically?
One mole of an ideal gas is initially at 0°C and 1 atm pressure. If it absorbs 1000 cal heat during a reversible isothermal expansion, what will be its final volume?
A given mass of gas expands from state A to state B by three paths 1, 2, and 3 as shown in the figure: If w ,w and w respectively, be the work done by the gas along three paths, then (a) w w w (b) w w w
The maximum work obtained by an isothermal reversible expansion of 1 mole of an ideal gas at 27°C from 2.24 to 22.4 L is (R = 2 cal)
The pressure of a gas is 100 kPa. If it is compressed from 1m3 to 10 dm3, find the work done.
An ideal gas receives 10 J of heat in a reversible isothermal expansion. Then the work done by the gas:
An ideal gas expands in volume from 1 × 10–3 to 1 × 10–2 m3 at 300 K against a constant pressure 1 × 105 Nm–2. The work done is
Calculate the work done when 1 mol of an ideal gas is compressed reversibly from 1 bar to 4 bar at a constant temperature of 300 K
E is always positive, when
Two moles of Helium gas undergo a reversible cyclic process as shown in figure. Assuming gas to be ideal. What is the work done for the process C to D?
A sample of liquid in a thermally insulated container (a calorimeter) is stirred by a motor. Taking liquid as a system for this process choose the appropriate option:
In a reaction, all reactant and products are liquid, then (a) H E (b) H E (c) H E
According to the first law of thermodynamics, U q w . In special cases the statement can be expressed in different ways. Which of the following is not a correct expression?
A system absorb 10 kJ of heat at constant volume and its temperature rises from 27°C to 37°C. The value of ∆U is
An ideal gas is taken around the cycle ABCA as shown in P-V diagram The net work done by the gas during the cycle is equal to:
16g of oxygen gas expands isothermally and reversibly at 300 K from 10 dm3 to 100 dm3. The work done is (in J)
When one mole of an ideal gas is compressed to half of its initial volume and simultaneously heated to twice its initial temperature, the change in entropy of gas (∆S) is :
Gaseous system is placed with pressure P₁, volume V₁ and temperature T1, it has undergone thermodynamic changes where temperature is remaining constant, it is
Based on the first law of thermodynamics, which one of the following is correct?
In ….. process, work is done at the expense of internal energy.
U q w , is mathematical expression for
One mole of an ideal diatomic gas (Cv = 5 cal) was transformed from initial 25°C and 1 L to the state when temperature is 100°C and volume 10 L. The entropy change of the process can be expressed as (R = 2 calories/mo…
1 mole of an ideal gas expands isothermally reversibly from 2 litre to 4 litre and 3 moles of the same gas expands from 2 litre to x litre and doing same work, what is ‘x’?