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Chapter 22: Problem 18
In each of the following, name the functional group (i.e., ester, aldehyde,....). (a) \(\mathrm{CH}_{2}=\mathrm{CH}-\mathrm{O}-\mathrm{CH}_{3}\)
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The \(K_{\mathrm{b}}\) for ethylamine \(\left(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\right)\) is \(4.3 \times 10^{-4}\). What is the \(\mathrm{pH}\) of a \(0.250 \mathrm{M}\) solution of ethylamine? Compare with the \(\mathrm{pH}\) of a \(0.250 \mathrm{M}\) solution of ammonia \(\left(K_{b}=1.86 \times 10^{-5}\right)\).
When the conjugate acid of aniline, \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}\), reacts with the acetate ion, the following reaction takes place: \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}(a q)+\mathrm{CH}_{3} \mathrm{COO}^{-}(a q) \rightleftharpoons \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}(a q)+\mathrm{CH}_{3} \mathrm{COOH}(a q)\) If \(K_{\mathrm{a}}\) for \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}{ }^{+}\) is \(1.35 \times 10^{-5}\) and \(K_{\mathrm{a}}\) for \(\mathrm{CH}_{3} \mathrm{COOH}\) is \(1.86 \times 10^{-5}\) what is \(K\) for the reaction?
Write structural formulas for the following alkanes. (a) 3-ethylpentane (b) 2,2-dimethylbutane (c) 2-methyl-3-ethylheptane (d) 2,3-dimethylpentane
Draw the structural isomers of the alkane \(\mathrm{C}_{6} \mathrm{H}_{14} .\)
Write structures for all the structural isomers of double-bonded com- pounds with the molecular formula \(\mathrm{C}_{5} \mathrm{H}_{10}\).
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