The value of kw increases with temperature because the ionization of water
Correct answer: C. Increases
- A. Decreases
- B. Remains constant
- C. Increases
- D. None of the above
Explanation
The increase in the value of Kw with temperature is due to the endothermic nature of the ionization of water. As temperature rises, the equilibrium shifts to favor the formation of more ions (H+ and OH-), thereby increasing Kw. Option A is incorrect because ionization does not decrease with temperature. Option B is incorrect because if ionization remained constant, Kw would not change. Option D is incorrect as there is a valid explanation for the observed phenomenon.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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