JAMB Chemistry 2012 Objective — Question 19
Question 19 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2012 Objective paper, with the correct answer and a full explanation.
Advertisement
Write the structure of the amino acid, CH3CH(NH2)COOH in acidic medium and alkaline medium.
- A. CH3CH(NH3+)COOH in acid; CH3CH(NH2)COO− in alkaliCorrect
- B. CH3CH(NH2)COOH in acid; CH3CH(NH3+)COO− in alkali
- C. CH3CH(NH3+)COO− in both
- D. CH3CH(NH2)COOH in both
Explanation
In acidic medium, the amino acid exists predominantly as CH3CH(NH3⁺)COOH. In alkaline medium, it exists predominantly as CH3CH(NH2)COO⁻.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.