# Question 3.12: A mass of 500 g of gaseous ammonia is contained in a vessel ...

A mass of 500 g of gaseous ammonia is contained in a vessel of $30,000 cm^{3}$ volume and immersed in a constant-temperature bath at 65°C. Calculate the pressure of the gas by:

(a) The ideal-gas state;

(b) A generalized correlation.

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Question: 3.13

## For n-butane at 470 K prepare a plot of compressibility factor Z as a function of pressure in bar, for pressures up to 200 bar, comparing the results from: (a) The Redlich/Kwong equation of state. (b) The Peng/Robinson equation of state. (c) The 2-term virial equation, with the generalized ...

From App. B, T_{c} = 425.1  K,  P_{c} = 37....
Question: 3.14

## For ammonia at 310 K, estimate the density of: (a) The saturated liquid; (b) The liquid at 100 bar ...

(a) Apply the Rackett equation at the reduced temp...
Question: 3.11

## What pressure is generated when 500 mol of methane is stored in a volume of 0.06 m^3 at 50°C? Base calculations on each of the following: (a) The ideal-gas state. (b) The Redlich/Kwong equation. (c) A generalized correlation. ...

The molar volume of the methane is V = 0.06...
Question: 3.10

## Determine the molar volume of n-butane at 510 K and 25 bar based on each of the following: (a) The ideal-gas state. (b) The generalized compressibility-factor correlation. (c) Equation (3.57), with the generalized correlation for B. (d) Equation (3.63), with the generalized correlations for B and C ...

(a) For the ideal-gas state, V = \frac{RT}{...
Question: 3.7

## If in Ex. 3.6 the flow rate of air is 1 mol.s^–1 and if both upstream and downstream pipes have an inner diameter of 5 cm, what is the kinetic-energy change of the air and what is its temperature change? For air, C_{P}^{ig} = 29.100 J· mol^−1 and the molar mass is ℳ = 29 g·mol^−1. ...

By Eq. (2.23b), $\dot{n} = uA\rho$ (2...
Question: 3.4

## A gas in its ideal-gas state undergoes the following sequence of mechanically reversible processes in a closed system: (a) From an initial state of 70°C and 1 bar, it is compressed adiabatically to 150°C. (b) It is then cooled from 150 to 70°C at constant pressure.(c) Finally, it expands ...

Take as a basis 1 mol of gas. (a) For adiabatic co...
Question: 3.3

## Air is compressed from an initial state of 1 bar and 298.15 K to a final state of 3 bar and 298.15 K by three different mechanically reversible processes in a closed system: (a) Heating at constant volume followed by cooling at constant pressure. (b) Isothermal compression. (c) Adiabatic ...

Choose the system as 1 mol of air. The initial and...
Question: 3.2

## For liquid acetone at 20°C and 1 bar, β = 1.487 × ​10^−3 °C^−1 κ = 62 × ​10^−6 bar^−1 V = 1.287 cm^3.g^−1For acetone, find: (a) The value of (∂P/∂T)V at 20°C and 1 bar. (b) The pressure after heating at constant V from 20°C and 1 bar to 30°C.(c) The ...

(a) The derivative ( ∂ P / ∂ T )_{V} [/late...
Question: 3.1

## How many phase-rule variables must be specified to fix the thermodynamic state of each of the following systems? (a) Liquid water in equilibrium with its vapor. (b) Liquid water in equilibrium with a mixture of water vapor and nitrogen. (c) A three-phase system of a saturated aqueous salt ...

Values of $T_{c } and P_{c}$ for n-...