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MMLU-Pro / 3925 / Metallic sodium violently liberates H_2 gas according to the Reaction 2Na(s) +…

Problem

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

question

Metallic sodium violently liberates H_2 gas according to the Reaction 2Na(s) + 2H_2 0(l) \rightarrow 2NaOH + H_2 (g) If you collect the gas at 25°C under 758 mm Hg of press-ure, and it occupies 2.24 liters, (a) find the number of moles of hydrogen produced, (b) find the number of moles of water decomposed and (c) find the percent error in (a) if the gaseous hydrogen had been collected dry, assuming the vapor pressure of water is 23.8 mm at 25 C. (R = .0821 l-atm/mole °K.) (R = .0821 l-atm/mole °K.)

category

chemistry

options

  1. 0.12 mole H_2, 0.24 mole of water, 6%
  2. 0.0913 mole H_2, 0.183 mole of water, 3.24%
  3. 0.2 mole H_2, 0.4 mole of water, 5%
  4. 0.085 mole H_2, 0.17 mole of water, 2%
  5. 0.05 mole H_2, 0.1 mole of water, 1.5%
  6. 0.15 mole H_2, 0.3 mole of water, 4%
  7. 0.1 mole H_2, 0.2 mole of water, 2.5%
  8. 0.095 mole H_2, 0.19 mole of water, 3.5%
  9. 0.11 mole H_2, 0.22 mole of water, 4.5%
  10. 0.075 mole H_2, 0.15 mole of water, 2.8%

src

stemez-Chemistry

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Source and history

upstream_id / Original problem ID
3925
task_id
15424c99-5c0b-5413-8c46-07e52e8a7915
task_key
default--test--3925
task_revision_id
1
config / split
default / test

Official source

initial import