In an Adiabatic Process (One in Which No Heat Transfer $P$

question 60

Multiple Choice

In an adiabatic process (one in which no heat transfer takes place) , the pressure $P$ and volume $V$ of an ideal gas such as oxygen satisfy the equation
$$P ^ { 5 } V ^ { 7 } = C$$
where $C$ is a constant. Suppose that at a certain instant of time, the volume of the gas is $2 \mathrm {~L}$ , the pressure is $100 \mathrm { kPa }$ , and the pressure is decreasing at the rate of $5 \mathrm { kPa } / \mathrm { sec }$ . Find the rate at which the volume is changing.

• A) \(14 \mathrm {~L} / \mathrm { sec }\)
• B) \(C - 14 \mathrm {~L} / \mathrm { sec }\)
• C) \(C - \frac { 1 } { 14 } \mathrm {~L} / \mathrm { sec }\)
• D) \(\frac { 1 } { 14 } \mathrm {~L} / \mathrm { sec }\)

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