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| pH of Aqueous Ammonia, Cyclohexylamine, and Aniline |
Three beakers are shown containing 0.1M aqueous solutions of ammonia, cyclohexylamine, and aniline respectively. The pH of each solution is measured.

Ammonia |

Cyclohexylamine |

Aniline |
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Aniline is less basic than cyclohexyl amine due to the electron withdrawing effect of the benzene ring that removes electron density from the basic nitrogen. Cyclohexylamine is similar in base strength to ammonia.
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Citation:
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Shakhashiri, B. Z.
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Chemical Demonstrations; University of Wisconsin Press: Madison, 1983; Vol. 3, pp 158-161.
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