Specific Heats: Cv and Cp for Monatomic and Diatomic Gases
Created Date: 10/21/2019 3:49:00 PM Title: Specific Heats: Cv and Cp for Monatomic and Diatomic Gases Keywords: Specific heat, heat capacity, thermodynamics, gamma
Measurement of Cp/Cv for a monatomic, diatomic and triatomic gas
heats, Cp and Cv, and hence calculate gamma, γ, for 3 gases - Argon, Nitrogen and Carbon Dioxide These values would then be compared to the experimentally accepted values The objective of this experiment was to use the oscillating ball method to measure the frequency of oscillation of the ball, as
1 Determining the Ratio C /CV using Rucchart’s Method
theoretically gamma for a diatomic gas is 1 4 Table 2 gives the values for gamma found in this experiment Table 2 Experimental values of γ for air, Helium, and Nitrogen value std dev air 1 31 0 01 Helium 0 46 0 08 Nitrogen 0 62 0 09 The experimental values of gamma for Helium and Nitrogen do not agree with theoretical values
Relation between Cp And Cv
Cp & Cv respecti Q be the Althoug them to Step 1: T Let Q1 b Q1 = 1 C Step II : force P Let Q2 = Q2 = P x dy in between C onsider 1 kg Some hea tant pressur of cross sec in temperat distance AB x = The incre = Molar spe vely heat suppli h both the c be occurring he volume i
Measurement of Cp/Cv for Argon, Nitrogen,
Measurement of C p /C v for Argon, Nitrogen, Carbon Dioxide and an Argon + Nitrogen Mixture Stephen Lucas With laboratory partner: Christopher Richards
Clement Desormes - De Anza College
Goal: To determine gamma, v = CP/Cv, for air Equipment: Manometer Flask with drying agent Rod and clamps Hand pump and tubing with hose clamp Vacuum grease Diagram of setup: Plastic T ubi ng Support Stand Clamp Pre-lab exercise: Derive equations (6) and (7)
1 Adiabatic process for an ideal gas with constant specific
2 Carnot Cycle for ideal gas with specific heats (closed system) A Carnot cycle consists of four states and four processes 1 → 2 Isothermal expansion (heat addition) at TH
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Review of Thermodynamics The equations of stellar structure involve derivatives of thermo-dynamic variables such as pressure, temperature, and density
Only two independent variables = Maxwell and other Relations
Useful Work The work P 0 V, is used to push back the environment The heat transfer could run an engine producing useful work U = Q W = Q Wuseful P 0 V (1) where Q is the heat transported from the surroundings to the system,
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