Why is the pKa of diphenylamine low?
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In an aqueous solution, diphenylamine is not an acid.
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The low pKa of diphenylamine is due to the electron-donating nature of the phenyl groups attached to the amine nitrogen. This electron-donating effect increases the electron density around the nitrogen atom, making it more basic and thus lowering the pKa value.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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