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Analyze the following plot, and identify which line is associated with the given

ID: 539919 • Letter: A

Question

Analyze the following plot, and identify which line is associated with the given change in pressure.

a. Which line is observed when pressure is increased?

b, The initial pressure is 1.45 atm, and the initial volume is 20.6 L. Upon a change in pressure, the final volume of the gas is 28.3 L. The temperature and the number of moles of gas is held constant. What is the final pressure of the gas, given the change?

Analyze the following plot, and identify which line is associated with the given change in pressure. Initial Pressure Line 1 Line 2

Explanation / Answer

Recall that

PV = k*T

then

P = k*T/V

we need

1/L = k*V/t

meaning that slope of graph V vs. T; will be the pressure change

if we have a "small" slope, then this implies a greater change in pressure

choose line 2

Q2.

P1 = 1.45 atm

V = 20.6 L

P2 = x

V2 = 28.3 L

if T and n remains

then

P1V1 = P2V2

P2 = P1*V1/V2 = 1.45 * 20.6 / 28.3

P2 = 1.05547 atm