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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