Gasoline is drawn from the fuel tank of an auto through an inlet tube that is attached to a float that rides on the surface of the gasoline. Which of the following characteristics of water and gasoline might account for this arrangement?
a. Water is quite soluble in gasoline.
b. Water is insoluble in gasoline and is more dense than gasoline.
c. Water is insoluble in gasoline and is less dense than gasoline.
Explain your answer:
For unexplained reasons, the distilled water in a lab has a pH of about 6. A solid is added to a sample of the water and dissolves. The pH of the resulting solution is about 6. Which of the following best describes the solute?
a. Soluble and dissociated to give OH-.
b. Soluble and dissociated to give H3O+.
c. Soluble but undissociated.
d. Soluble and may or may not be dissociated.
Explain your answer:
a. Water is quite soluble in gasoline.
b. Water is insoluble in gasoline and is more dense than gasoline.
c. Water is insoluble in gasoline and is less dense than gasoline.
Explain your answer:
For unexplained reasons, the distilled water in a lab has a pH of about 6. A solid is added to a sample of the water and dissolves. The pH of the resulting solution is about 6. Which of the following best describes the solute?
a. Soluble and dissociated to give OH-.
b. Soluble and dissociated to give H3O+.
c. Soluble but undissociated.
d. Soluble and may or may not be dissociated.
Explain your answer:
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Wow, your teacher's teaching you how to draw gas from a car? Shady stuff.
Anyway.
C. If the float floats on gasoline, and its filled with water... I'm sure you can figure it out.
A. If something is soluble, it dissociates. Otherwise ITS INSOLUBLE. And since it had a limited effect on the ph, it must release OH ions. If it released H+ ions, the pH would rise significantly.
Anyway.
C. If the float floats on gasoline, and its filled with water... I'm sure you can figure it out.
A. If something is soluble, it dissociates. Otherwise ITS INSOLUBLE. And since it had a limited effect on the ph, it must release OH ions. If it released H+ ions, the pH would rise significantly.
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No