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Home Question Bank Chemistry Archive 2024 December 15

Chemistry Questions from Dec 15,2024

Browse the Chemistry Q&A Archive for Dec 15,2024, featuring a collection of homework questions and answers from this day. Find detailed solutions to enhance your understanding.

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Steric Factor Which of the organic molecules in Q. 3 contain: \[ \begin{array}{llll}\text { (a) alkene } & \text { (b) halogen } & \text { (c) carboxylic acid } & \text { (d) cycloalkane }\end{array} \] Which of the organic molecules in Q. 3 contain: \( \begin{array}{llll}\text { (a) alkene } & \text { (b) halogen } & \text { (c) carboxylic acid } & \text { (d) cycloalkane }\end{array} \quad \) (e) amine Which of the organic molecules in Q. 3 contain: \( \begin{array}{llll}\text { (a) alkene } & \text { (b) halogen } & \text { (c) carboxylic acid } & \text { (d) cycloalkane }\end{array} \) 3. Examining the name \& structure of 2 methyl butane, deduce why there is a 2 in the front of the name. The 2 in the front of the name is Your Turn 24! Species with delocalized electrons A. are always polar B. are always paramagnetic C. must be charged D. always have lower energy than they would if the electrons were localized E. can be drawn with a single Lewis structure One brand of vinegar has a pH of 4.5 . Another brand has a pH of 5.0 . The equation for the pH of a substance is \( \mathrm{pH}= \) -log \( \left[\mathrm{H}^{+}\right] \), where \( \mathrm{H}+ \) is the concentration of hydrogen ions. What is the approximate difference in the concentration of hydrogen ions between the two brands of vinegar? \( 2.2 \times 10^{-5} \) \( 3.2 \times 10^{-1} \) \( 3.2 \times 10^{1} \) \( 6.8 \times 10^{4} \) The equation for the pH of a substance is \( \mathrm{pH}=-\log \left[\mathrm{H}^{+}\right] \), where \( \mathrm{H}+ \) is the concentration of hydrogen ions, A basic solution has a pH of 11.2 . An acidic solution has a pH of 2.4 . What is the approximate difference in the concentration of hydrogen ions between the two solutions? \( \begin{array}{l}1.6 \times 10^{-9}\end{array} \) \( 4.0 \times 10^{-3} \) \( 6.7 \times 10^{-1} \) \( 1.6 \times 10^{11} \) equation models the concentration of hydrogen ions \( \left(\mathrm{H}^{+}\right) \)of a solution whose pH is 7.2 ? \( \left[\mathrm{H}^{+}\right]=\log 7.2 \) \( \left[\mathrm{H}^{+}\right]=-\log 7.2 \) \( \left[\mathrm{H}^{+}\right]=10^{-7.2} \) \( \left[\mathrm{H}^{+}\right]=10^{7.2} \) Draw the following structures: (a) butyl octanoate (b) 1,4-dichloropentan-2-one (c) 1,4-difluorobenzene (d) 1,5-diethyl-1,2,3-trimethylcyclohexane (e) 2,2,3,3,4,4-hexafluorobutanoic acid
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