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Chapter 5: Q5.12P (page 227)

If the sample flask in Figure P5.12 is open to the air, what is the atmospheric pressure (in atm)?

Short Answer

Expert verified

The atmospheric pressure is 0.966 atm.

Step by step solution

01

Determination of the atmospheric pressure

The atmospheric pressure is equal to the difference in height of the mercury column.

鈭�h鈥�=鈥�Patmospheric

Now, height is,

鈭�h鈥�=鈥�0.734鈥�m

Convert m into mm,

鈥�鈥�鈥�鈥�1.0鈥�m = 1000鈥�mm鈬�鈥�0.734鈥�m鈥�=鈥�734鈥�鈥�mm

So, the atmospheric pressure is 734 mmHg.

02

Conversion of unit from mmHg to atm 

1 atm = 760 mmHg

Now, the pressure is,

734鈥�mmHg鈥�脳鈥�1鈥�atm760鈥�mmHg鈥�鈥�=鈥�0.966鈥�鈥�atm

Thus, the atmospheric pressure is 0.966 atm.

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Most popular questions from this chapter

In Figure P5.10, what is the pressure of the gas in the flask (in atm) if the barometer reads 738.5 torr?

What is the effect of the following on the volume of 1 mol of an ideal gas?

(a) The pressure is reduced by a factor of 4 (at constantT).

(b) The pressure changes from 760 torr to 202 kPa, and the temperature changes from 37掳Cto 155 K.

(c) The temperature changes from 305 K to 32掳C, and the pressure changes from 2 atm to 101 kPa.

A long glass tube, sealed at one end, has an inner diameter of 10.0 mm. The tube is filled with water and inverted into a pail of water. If the atmospheric pressure is 755 mmHg, how high (in mmH2O) is the column of water in the tube (dof Hg = 13.5 g/mL; dof H2O = 1.00 g/mL)?

In the following relationships, which quantities are variables and which are fixed: (a) Charles鈥檚 law; (b) Avogadro鈥檚 law; (c) Amontons鈥檚 law?

On a cool, rainy day, the barometric pressure is 730 mmHg. Calculate the barometric pressure in centimeters of water (cmH2O) (dof Hg = 13.5 g/mL; dof H2O = 1.00 g/mL).
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