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MMLU-Pro / 3873 / Calculate the number of grams of NH_4Cl that must be added to 2 l of 0.1 M NH_3…

Problem

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

question

Calculate the number of grams of NH_4Cl that must be added to 2 l of 0.1 M NH_3 to prepare a solution of pH = 11.3 at 25°C. The K_b for NH_3 = 1.8 × 10^-5. The equilibrium equation is: NH_3 + H_2O \rightleftarrows NH_4^+ + OH^-.

category

chemistry

options

  1. 0.110 g of NH_4Cl
  2. 0.098 g of NH_4Cl
  3. 0.089 g of NH_4Cl
  4. 0.080 g of NH_4Cl
  5. 0.097 g of NH_4Cl
  6. 0.096 g of NH_4Cl
  7. 0.095 g of NH_4Cl
  8. 0.085 g of NH_4Cl
  9. 0.103 g of NH_4Cl
  10. 0.092 g of NH_4Cl

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
3873
task_id
1762dcfd-1fc4-55dc-b350-23d746453dbd
task_key
default--test--3873
task_revision_id
1
config / split
default / test

Official source

initial import