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MMLU-Pro / 4321 / A chemist has a solution which contains Zn^2+ and Cu^2+, each at .02M. If the…

Problem

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question

A chemist has a solution which contains Zn^2+ and Cu^2+, each at .02M. If the solution is made 1M in H_3O+ and H_2S is bubbled in until the solution is saturated, will a precipitate form? K_sp of ZnS = 1 × 10-^22, K_sp of CuS = 8 × 10-^37, and K_eq for H_2S, when saturated, = 1 × 10-^22 .

category

chemistry

options

  1. Precipitation of CuS followed by ZnS
  2. Precipitation of ZnS
  3. Precipitation of CuS
  4. Precipitation of an insoluble compound other than ZnS or CuS
  5. Precipitation of ZnS followed by CuS
  6. No precipitation initially, but occurs upon further addition of H_2S
  7. Precipitation only at low pH values
  8. No precipitation
  9. Precipitation of both ZnS and CuS
  10. Precipitation only at high temperatures

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
4321
task_id
98641ce0-3a43-5eaf-871f-762f4f4eb078
task_key
default--test--4321
task_revision_id
1
config / split
default / test

Official source

initial import