What is the pKb value of a weak base?

Practice Questions

Q1
What is the pKb value of a weak base?
  1. Less than 7
  2. Equal to 7
  3. Greater than 7
  4. None of the above

Questions & Step-by-Step Solutions

What is the pKb value of a weak base?
  • Step 1: Understand what a weak base is. A weak base is a substance that does not completely ionize in water.
  • Step 2: Know that pKb is a measure of the strength of a base. It is the negative logarithm of the base dissociation constant (Kb).
  • Step 3: Remember that the pKb value indicates how well a base can accept protons (H+).
  • Step 4: Recognize that strong bases have low pKb values (usually less than 7), while weak bases have higher pKb values.
  • Step 5: Conclude that since weak bases do not ionize completely, their pKb values are greater than 7.
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