Which of the following is a weak base?A.KOH (potassium hydroxide)B.LiOH (lithium hydroxide)C.NH3 (ammonia)D.NaOH (sodium hydroxide)
Question
Which of the following is a weak base?
A. KOH (potassium hydroxide)
B. LiOH (lithium hydroxide)
C. NH3 (ammonia)
D. NaOH (sodium hydroxide)
Solution
The weak base among the options given is C. NH3 (ammonia).
Here's why:
A. KOH (potassium hydroxide) - This is a strong base because it completely dissociates in water into K+ and OH- ions.
B. LiOH (lithium hydroxide) - This is also a strong base because it completely dissociates in water into Li+ and OH- ions.
C. NH3 (ammonia) - This is a weak base because it does not completely dissociate in water. Instead, it reacts with water to form NH4+ and OH- ions, but some of the original NH3 remains.
D. NaOH (sodium hydroxide) - This is a strong base because it completely dissociates in water into Na+ and OH- ions.
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