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If the hydrogen ion increases in a solution, the pH will

A.

increase

B.

hydrogen ions do not influence pH

C.

decrease

D.

stay the same

Answer and Explanation

The Correct Answer is C

A. Increase: An increase in hydrogen ion concentration does not cause the pH to rise; higher hydrogen ion levels correspond to greater acidity, which lowers the pH.

B. Hydrogen ions do not influence pH: Hydrogen ion concentration is the defining factor of pH. Changes in H⁺ directly affect the acidity or alkalinity of a solution.

C. Decrease: pH is inversely related to hydrogen ion concentration. As H⁺ increases, the solution becomes more acidic, causing the pH value to decrease.

D. Stay the same: pH remains constant only if hydrogen ion concentration is unchanged. An increase in H⁺ will alter the pH, so it will not remain the same.


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Related Questions

Correct Answer is C

Explanation

A. 37 protons and 37 neutrons: The atomic number defines the number of protons, so an atomic number of 74 corresponds to 74 protons, not 37. Neutron number can vary depending on the isotope.

B. 37 protons and 37 electrons: Similarly, the number of protons equals the atomic number, which is 74 in this case. Electrons in a neutral atom also equal 74, not 37.

C. 74 protons: The atomic number of an element specifies the number of protons in its nucleus. Therefore, an atom with an atomic number of 74 has 74 protons.

D. 74 neutrons: Neutron number is not directly determined by the atomic number; it varies among isotopes. The atomic number only defines the number of protons.

Correct Answer is C

Explanation

A. Cervical region: The cervical region (neck) is part of the axial division, which includes the head, neck, and trunk.

B. Organs of the female reproductive system: These are found within the pelvic cavity, which is part of theaxial body.

C. Carpal region: The carpal region refers to the wrist, which is part of the appendicular division of the body (limbs). It is not included in the axial division.

D. Body cavities: Major body cavities, including the cranial, thoracic, and abdominopelvic cavities, are part of the axial division, providing structural support and housing vital organs.

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