$$[H^+] = 1 \times 10$$^{-4}$$ M

Question 1

Which property of water is most responsible for its ability to help regulate body temperature during exercise?

Accepted Answer

High heat of vaporization

Question 2

A solution has a pH of 4. What is the concentration of hydrogen ions $$[H^+] in $$this solution?

Accepted Answer

$$[H^+] = 1 	imes 10$$^{-4}$$ M

Question 3

Which of the following best explains why sodium chloride (NaCl) dissolves easily in water?

Accepted Answer

Water is a polar solvent and forms hydration layers around Na$$^+$$ and Cl$$^-$$ ions

Question 4

Which of the following is NOT an example of an inorganic compound?

Accepted Answer

Glucose

Question 5

If the pH of a solution changes from 7 to 5, how does the hydrogen ion concentration change?

Accepted Answer

It increases by 100 times

Question 6

Which of the following statements about acids and bases is correct?

Accepted Answer

Acids are proton donors and bases are proton acceptors

Question 7

A patient is given a solution with a pH of 8. Which of the following best describes this solution?

Accepted Answer

It is alkaline (basic) with low $$[H^+]$$ and high pH

Question 8

Which of the following is a property of water that makes it an effective coolant for the human body?

Accepted Answer

High heat of vaporization

Question 9

Which of the following ions is NOT commonly found as a major electrolyte in the human body?

Accepted Answer

Mg$$^{2+}$$

Question 10

Which of the following best describes the relationship between pH and hydrogen ion concentration?

Accepted Answer

pH is the negative logarithm of $$[H^+] in $$moles per liter

Question 11

Which of the following is true about neutral solutions?

Accepted Answer

They have equal numbers of H$$^+$$ and OH$$^-$$ ions

Question 12

Which of the following is a correct example of a base dissociating in water?

Accepted Answer

$$\mathrm{NaOH} \rightarrow \mathrm{Na}^+ + \mathrm{OH}^-$$

Question 13

Which of the following is NOT a property of water that is important for life?

Accepted Answer

Low heat capacity

Question 14

Which of the following best explains why ionic balance is vital for homeostasis?

Accepted Answer

Ions play specialized roles in body functions such as nerve signaling and muscle contraction

Question 15

Which of the following is an example of a common salt found in the human body?

Accepted Answer

NaCl

Biochemistry Foundations for Anatomy & Physiology: Water, Salts, Acids, and Bases

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