Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  3. Chemistry AQA
  5. Question bank

Amino acids, proteins and DNA (A-level only)

EasyMedium
12345678910111213141516171819202122
Question 9

Which structure represents the major species of aspartic acid (2-aminobutanedioic acid) present in a strongly alkaline solution at pH 12?

H3N+−CH−COO−∣CH2COOH \begin{array}{c} \text{H}_3\text{N}^+ - \text{CH} - \text{COO}^- \\ | \\ \text{CH}_2\text{COOH} \end{array} H3​N+−CH−COO−∣CH2​COOH​
H3N+−CH−COOH∣CH2COOH \begin{array}{c} \text{H}_3\text{N}^+ - \text{CH} - \text{COOH} \\ | \\ \text{CH}_2\text{COOH} \end{array} H3​N+−CH−COOH∣CH2​COOH​
H2N−CH−COO−∣CH2COO− \begin{array}{c} \text{H}_2\text{N} - \text{CH} - \text{COO}^- \\ | \\ \text{CH}_2\text{COO}^- \end{array} H2​N−CH−COO−∣CH2​COO−​
H3N+−CH−COO−∣CH2COO− \begin{array}{c} \text{H}_3\text{N}^+ - \text{CH} - \text{COO}^- \\ | \\ \text{CH}_2\text{COO}^- \end{array} H3​N+−CH−COO−∣CH2​COO−​

Amino acids, proteins and DNA (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Amino acids, proteins and DNA (A-level only)