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MMLU-Pro / 4513 / A single line is seen in the 31P spectrum of a solution of sodium phosphate. The…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A single line is seen in the 31P spectrum of a solution of sodium phosphate. The 31P chemical shifts of H2PO4‾ and HPO42– are 3.42 ppm and 5.82 ppm respectively. What is the chemical shift when the pH of the solution equals the pKa of H2PO4‾?

category

chemistry

options

  1. 6.10 ppm
  2. 3.98 ppm
  3. 5.00 ppm
  4. 3.41 ppm
  5. 4.33 ppm
  6. 3.50 ppm
  7. 5.82 ppm
  8. 4.62 ppm
  9. 4.50 ppm
  10. 2.98 ppm

src

ori_mmlu-college_chemistry

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Source and history

upstream_id / Original problem ID
4513
task_id
edfca043-4a56-5f49-95b5-bd730f6a571f
task_key
default--test--4513
task_revision_id
1
config / split
default / test

Official source

initial import