Specific Heat at Constant Volume and Pressure
1 / 10
Mayer’s relation for ideal gases is:
Explanation: Mayer’s relation shows cp exceeds cv by the gas constant due to work. It’s derived from the First Law for ideal gases.
2 / 10
The unit of specific heat is
Explanation: Specific heat measures heat per unit mass per degree, hence J/kg·K. Other units apply to energy, heat capacity, or pressure.
3 / 10
For an ideal gas, cv depends primarily on:
Explanation: cv for ideal gases is constant or varies with temperature, affecting internal energy. Pressure, volume, or entropy don’t directly govern it.
4 / 10
In an isobaric process, heat added relates to:
 Explanation: Heat at constant pressure increases enthalpy (Q = ΔH = m·cp·ΔT). Internal energy changes partially, with work involved.
5 / 10
Specific heat at constant volume is critical in:
Explanation: cv applies to constant-volume systems like rigid tanks, affecting internal energy. Turbines and nozzles involve flow and cp.
6 / 10
cp is higher than cv because:
 Explanation: cp includes heat for expansion work plus internal energy, unlike cv. This extra work makes cp > cv for ideal gases.
7 / 10
In a constant volume process, heat added equals:
 Explanation: With no work (W = 0), heat increases internal energy (Q = ΔU = m·cv·ΔT). Enthalpy and pressure changes are secondary.
8 / 10
For ideal gases, the relation between cp and cv is:
Explanation: cp exceeds cv by the gas constant R, accounting for PV work. This is Mayer’s relation, key for ideal gas problems.
9 / 10
Specific heat at constant pressure (cp) is used for:
Explanation: cp governs heat addition at constant pressure, affecting enthalpy (ΔH = m·cp·ΔT). Other processes use cv or involve no heat.
10 / 10
Specific heat at constant volume (cv) relates to:
 Explanation: At constant volume, heat increases internal energy (ΔU = m·cv·ΔT). Enthalpy, pressure, or entropy changes involve other processes.
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