Molar specific heat of oxygen at constant pressure C p -7-2 cal - mol - C and R -8-3 J - mol - K- At constant volume- 5 mol of oxygen is heated from 10- C to 20- C- the quantity of heat required is approximatelyA- 25 calB- 50 calC- 250 calD- 500 cal

The correct option is C 250cal By Mayer’s formulaC_ν=C_p R=7.2 2≈5 cal/mol^∘ C At constant volume Δ Q= μ c_νΔ T=5×5×10=250 cal ...

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Standard XII

Chemistry

Relation between Cp and Cv

Molar specifi...

Question

Molar specific heat of oxygen at constant pressure $C_{p} = 7.2 c a l / m o l /^{\circ} C$ and $R = 8.3 J / m o l / K .$ At constant volume, 5 mol of oxygen is heated from $10^{\circ} C$ to $20^{\circ} C$ , the quantity of heat required is approximately

25 cal

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50cal

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250cal

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500cal

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Solution

The correct option is C 250cal
By Mayer’s formula $C_{ν} = C_{p} - R = 7.2 - 2 \approx 5 c a l / m o l^{\circ} C$
At constant volume $Δ Q = μ c_{ν} Δ T = 5 \times 5 \times 10 = 250 c a l$

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Molar specific heat of oxygen at constant pressure Cp=7.2cal/mol/∘C and R=8.3J/mol/K. At constant volume, 5 mol of oxygen is heated from 10∘C to 20∘C, the quantity of heat required is approximately

The correct option is C 250cal By Mayer’s formulaCν=Cp−R=7.2−2≈5 cal/mol∘C At constant volume ΔQ=μcνΔT=5×5×10=250cal

Molar specific heat of oxygen at constant pressure $C_{p} = 7.2 c a l / m o l /^{\circ} C$ and $R = 8.3 J / m o l / K .$ At constant volume, 5 mol of oxygen is heated from $10^{\circ} C$ to $20^{\circ} C$ , the quantity of heat required is approximately

The correct option is C 250cal
By Mayer’s formula $C_{ν} = C_{p} - R = 7.2 - 2 \approx 5 c a l / m o l^{\circ} C$
At constant volume $Δ Q = μ c_{ν} Δ T = 5 \times 5 \times 10 = 250 c a l$