Concept explainers
Interpretation: The order of decreasing basicity of the given nitrogen compounds is to be stated. The structures of their conjugate acids are to be drawn. Their
Concept introduction: When an acid donates a proton, the species formed is known as conjugate base and when the base accepts a proton, the species formed is known as conjugate acid.
The strength of an acid is decided by the stability of its conjugate base. The stability depends on the delocalization of the charge through resonance.
To determine: The order of decreasing basicity of the given nitrogen compounds, the structures of their conjugate acids, their
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Chapter 2 Solutions
EP ORGANIC CHEMISTRY -MOD.MASTERING 18W
- Which acid do you think would have the lower pKa value: HBrO4, HBrO3, HBrO2, or HBrO? Explain your answer.arrow_forwardWhy is it not possible to predict whether H3PO4 or H2SO3 is the stronger acid? Show how you can use data to decide which is the stronger acid.arrow_forwardBased on their compositions and structures and on conjugateacid–base relationships, select the stronger base in eachof the following pairs: (a) NO3- or NO2-, (b) PO43- or AsO43-,(c) HCO3- or CO32-.arrow_forward
- Rank the Acidity of the following sets of compounds in an increasing order. Give an explanation for your answer.arrow_forward(a) Given that Kb for ammonia is 1.8 x10-5 and that forhydroxylamine is 1.1 x 10-8, which is the stronger base?(b) Which is the stronger acid, the ammonium ion or thehydroxylammonium ion? (c) Calculate Ka values for NH4+and H3NOH+.arrow_forwardUsing pKa Values to Determine Relative Acidity and Basicity Rank the following compounds in order of increasing acidity, and then rank their conjugate bases in order of increasing basicity.arrow_forward
- Consider cyclohexane and benzene (draw the structures below). Draw the conjugate base of each molecule and then explain why cyclohexane is the weaker acid.arrow_forwardPredict the stronger acid in each pair: (a) HNO3 or HNO2;(b) H2S or H2O; (c) H2SO4 or H2SeO4; (d) CH3COOH or CCl3COOH.arrow_forwardThe pKa of ascorbic acid (vitamin C, page 55) is 4.17, showing that it is slightly more acidic than acetic acid (CH3COOH, pKa 4.74). Compare the most stable conjugate base of ascorbic acid with the conjugate base of acetic acid, and suggest why these two compounds have similar acidities, even though ascorbic acid lacks the carboxylic acid (COOH) group.arrow_forward
- Which is more acidic? Why?arrow_forwardIf HSO4- acts as an acid, what would be the conjugate base?arrow_forwardRank the following compounds in order of increasing acidity (1 = least acidic, 3 = most acidic) and in the space provided use resonance (of the conjugate base) to explain why the compound you have labelled “3” is the most acidic.arrow_forward
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