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MMLU-Pro / 4581 / The ^+NH_3CH_2COOH ion (glycine^+) is acationof the amino…

Problem

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question

The ^+NH_3CH_2COOH ion (glycine^+) is acationof the amino acidglycine(NH_2CH_2COOH).Glycine^+ undergoes the following two successive dissociations: ^+NH_3CH_2COOHk_1\rightleftarrows H^+ + ^+NH_3CH_2COO^- ; pk_1 = 2.35 ^+NH_3CH_2COO^-k_2\rightleftarrows H^+ + NH_2CH_2COO^- ; pk_2 = 9.78. What is theisoelectricpoint of this molecule (the pH at which the number of positive charges on the molecule equals the number of negative charges).

category

chemistry

options

  1. 8.57
  2. 7.23
  3. 5.68
  4. 4.89
  5. 4.56
  6. 7.50
  7. 6.35
  8. 6.07
  9. 8.12
  10. 5.92

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
4581
task_id
dc1d7d7d-4a1c-5054-9d1c-c6e0b2bc96c0
task_key
default--test--4581
task_revision_id
1
config / split
default / test

Official source

initial import