What is the pKb value of a weak base like methylamine?

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Question: What is the pKb value of a weak base like methylamine?

Options:

Correct Answer: Less than 7

Solution:

Methylamine is a weak base, so its pKb value is less than 7.

What is the pKb value of a weak base like methylamine?

What is the pKb value of a weak base like methylamine?

Step 1: Understand that methylamine is a weak base. This means it does not completely dissociate in water.
Step 2: Know that the pKb value is a measure of how weak or strong a base is. A lower pKb value means a stronger base.
Step 3: Remember that for weak bases, the pKb value is typically less than 7. This is because strong bases have pKb values greater than 7.
Step 4: Conclude that since methylamine is a weak base, its pKb value is indeed less than 7.

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