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Chapter 10: Problem 10

If the maximum distance that water may be brought up a well by a suction pump is \(34 \mathrm{ft}(10.3 \mathrm{~m})\), how is it possible to obtain water and oil from hundreds of feet below the surface of Earth?

Short Answer

Expert verified
We use submersible or lift pumps to extract deep liquids.

Step by step solution

01

Understanding the Question

The exercise is asking why the limitation of a suction pump pulling water from only 34 feet does not prevent us from extracting water or oil from much deeper underground.
02

Know the Limitations of Suction Pumps

Suction pumps operate by creating a vacuum, allowing atmospheric pressure to push liquids into the pump. However, because atmospheric pressure can only support approximately 34 feet (or 10.3 meters) of water column, suction pumps can't lift water beyond this height purely by suction.
03

Learn About Alternative Pump Mechanisms

To extract water or oil from below 34 feet, we change the method. Instead of pulling up the liquid by suction, we push or lift it using a different technique. This is typically achieved by using submersible pumps or lift pumps, which are situated within the liquid itself.
04

Explain Submersible Pumps

Submersible pumps are located at the bottom of the well. They push the liquid upwards instead of relying on atmospheric pressure, making it possible to move liquids from much deeper sources.
05

Explain Lift Pumps

Another method is using lift pumps, like those used in the oil industry. These pumps involve placing a mechanical device down the well to push the oil to the surface.
06

Conclusion

By using either submersible pumps or lift pumps, we are not limited by atmospheric pressure. This allows us to access water or oil from much greater depths than 34 feet.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Suction Pump Limitations
Suction pumps have a fundamental operating principle based on creating a vacuum. This vacuum allows atmospheric pressure to push a liquid into the pump. However, this method comes with a significant limitation. Atmospheric pressure can only support a vertical column of water that is up to 34 feet (or 10.3 meters) high. Beyond this point, atmospheric pressure is not sufficient to lift the water, and thus, a suction pump cannot draw water from deeper than 34 feet. While effective for shallow wells, this limitation makes suction pumps unsuitable for extracting water or oil from deep underground resources. Therefore, other techniques must be employed for deeper extraction.
Atmospheric Pressure
Atmospheric pressure plays a pivotal role in the operation of suction pumps. It is the force exerted by the weight of the air in the Earth's atmosphere. Key points about atmospheric pressure include:
  • It decreases with altitude; higher elevations have lower atmospheric pressure.
  • At sea level, it can support a column of water approximately 34 feet high. This measure is due to the equilibrium between the atmospheric force and the weight of the water column.
In the context of water extraction, atmospheric pressure is the invisible hand that allows liquids to be pushed into the pump. Still, because it can only "push" up to 34 feet, other methods are required beyond this height for deeper extractions.
Lift Pumps
Lift pumps offer a solution to the limitations of suction pumps by providing a different mechanism to move liquids. While suction pumps rely on atmospheric pressure, lift pumps actively push or lift the liquid upwards from deeper wells. Several aspects of lift pumps include:
  • They are designed to operate below the liquid surface, allowing them to bypass the 34-feet atmospheric pressure limitation.
  • Commonly used in the oil industry, lift pumps insert a mechanical device into the well to extract oil or water from deep beneath the ground.
By mechanically moving the liquid, lift pumps can access deeper sources of water or oil, making them essential for industries needing to extract resources from great depths.
Water Extraction Methods
There are various water extraction methods that go beyond the limitations of suction pumps, making it feasible to collect water or oil from much deeper sources. Some common water extraction methods include:
  • Submersible Pumps: These pumps operate underwater and push the liquid upwards, making them ideal for deep wells.
  • Centrifugal Pumps: Often used in agricultural applications, these pumps use a rotating impeller to move liquid.
  • Piston Pumps: Utilize a piston mechanism to mechanically push water upwards, suitable for various depths.
Additionally, advanced methods like jet pumps and solar-powered pumps are employed in specific scenarios. Each method offers unique benefits, depending on the depth of the source and the specific requirements of the application.

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Most popular questions from this chapter

Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain, the following reaction occurs: $$ 2 \mathrm{NaOH}(a q)+2 \mathrm{Al}(s)+6 \mathrm{H}_{2} \mathrm{O}(l) \longrightarrow 2 \mathrm{NaAl}(\mathrm{OH})_{4}(a q)+3 \mathrm{H}_{2}(g) $$ The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas released stirs up the solids clogging the drain. Calculate the volume of \(\mathrm{H}_{2}\) formed at \(23^{\circ} \mathrm{C}\) and 1.00 atm if \(3.12 \mathrm{~g}\) of \(\mathrm{Al}\) are treated with an excess of \(\mathrm{NaOH}\)

A piece of sodium metal reacts completely with water as follows: $$ 2 \mathrm{Na}(s)+2 \mathrm{H}_{2} \mathrm{O}(l) \longrightarrow 2 \mathrm{NaOH}(a q)+\mathrm{H}_{2}(g) $$ The hydrogen gas generated is collected over water at \(25.0^{\circ} \mathrm{C}\). The volume of the gas is \(246 \mathrm{~mL}\) measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at \(25^{\circ} \mathrm{C}=0.0313\) atm. \()\)

The gas laws are vitally important to scuba divers. The pressure exerted by \(33 \mathrm{ft}\) of seawater is equivalent to 1 atm pressure. (a) A diver ascends quickly to the surface of the water from a depth of \(36 \mathrm{ft}\) without exhaling gas from his lungs. By what factor will the volume of his lungs increase by the time he reaches the surface? Assume that the temperature is constant. (b) The partial pressure of oxygen in air is about \(0.20 \mathrm{~atm}\). (Air is 20 percent oxygen by volume.) In deep-sea diving, the composition of air the diver breathes must be changed to maintain this partial pressure. What must the oxygen content (in percent by volume) be when the total pressure exerted on the diver is \(4.0 \mathrm{~atm} ?\) (At constant temperature and pressure, the volume of a gas is directly proportional to the number of moles of gases.)

The pressure of \(6.0 \mathrm{~L}\) of an ideal gas in a flexible container is decreased to one-third of its original pressure, and its absolute temperature is decreased by one-half. What is the final volume of the gas?

A mixture of gases contains \(0.31 \mathrm{~mol} \mathrm{CH}_{4}, 0.25 \mathrm{~mol}\) \(\mathrm{C}_{2} \mathrm{H}_{6}\), and \(0.29 \mathrm{~mol} \mathrm{C}_{3} \mathrm{H}_{8}\). The total pressure is \(1.50 \mathrm{~atm} .\) Calculate the partial pressures of the gases.
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