A 2.5-L tank initially is empty, and we want to fill it with 10 g of ammonia. The ammonia comes from a line with saturated vapor at 25◦C. To achieve the desired amount, we cool the tank while we fill it slowly, keeping the tank and its content at 30◦C. Find the final pressure to reach before closing the valve and the heat transfer.

Question

Physics

Delaney Harper

7 May, 21:58

A 2.5-L tank initially is empty, and we want to fill it with 10 g of ammonia. The ammonia comes from a line with saturated vapor at 25◦C. To achieve the desired amount, we cool the tank while we fill it slowly, keeping the tank and its content at 30◦C. Find the final pressure to reach before closing the valve and the heat transfer.

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Answers (1)

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Adalyn Harrison · Answer 1

592.92 x 10³ Pa

Explanation:

Mole of ammonia required = 10 g / 17 = 0.588 moles

We shall have to find pressure of. 588 moles of ammonia at 30 degree having volume of 2.5 x 10⁻³ m³. We can calculate it as follows.

From the relation

PV = nRT

P x 2.5 x 10⁻³ =.588 x 8.32 x (273 + 30)

P = 592.92 x 10³ Pa