The value of universal gas constant is:
Correct answer: A. 8.314 Jmol-1K-1
- A. 8.314 Jmol-1K-1
- B. 8.324 Jmol-1K-1
- C. 7.23 Jmol-1K-1
- D. 1.00 Jmol-1K-1
Explanation
The correct value of the universal gas constant is 8.314 J/mol·K, which is used in the ideal gas law equation PV=nRT. This constant allows the relationship between pressure, volume, temperature, and moles of a gas to be calculated. Options B, C, and D are incorrect because they either do not match the precise value needed for accurate calculations or are significantly off. Precision is crucial when working with scientific constants.
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About Molar Specific Heat of a Gas
Molar specific heat is the heat required to raise the temperature of one mole of a gas by one kelvin, expressed through Q = nCΔT. Questions compare the constant volume value Cv with the constant pressure value Cp, apply the ideal gas relation Cp − Cv = R, and identify how the thermodynamic process affects heat capacity.
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