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प्रश्न
55 L atm of work is obtained when 1.0 mole of an ideal gas is compressed isothermally from
a volume of 28.5 L to 18.5 L, the constant external pressure is
(A) 5.05 atm
(B) 5.5 atm
(C) 0.05 atm
(D) 0.55 atm
उत्तर
(B) 5.5 atm [1]
`W = – P_(ex).DeltaV`
`55 = - P_(ex)(18.5 – 28.5)`
`- Pex = -55/10=5.5 atm`
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संबंधित प्रश्न
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- Measuring heat capacity of substance at various temperatures
- Subtracting standard entropy of reactants from products
- Measuring vibrational motion of molecules
- Using formula ΔS° = ST° - SO°
Determine whether the reactions with the following ΔH and ΔS values are spontaneous or non-spontaneous. State whether the reactions are exothermic or endothermic.
(a) ΔH = -110kJ, ΔS = + 40JK-1 at 400 K
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(b) isothermal and reversible process.
(c) into vaccum until the volume of gas is increased by 3L (R=8.314J mol-1 K-1)
One mole of a gas expands by 3L against a constant pressure of 3 atmosphere. Calculate the work done in -
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(b) Joules
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(A) Density, viscosity
(B) Surface tension, mass
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(D) Heat capacity, volume
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(A) 6.25 K
(B) 62.5 K
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(D) 6250 K
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