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ARC-Challenge / Mercury_412774 / A student is using a straw to blow bubbles into a calcium hydroxide solution.…

Problem

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

question

A student is using a straw to blow bubbles into a calcium hydroxide solution. The carbon dioxide in the student's breath is reacting with the water to form an acid, which begins to neutralize the basic solution. Which of the following best describes the initial change in pH of the solution?

choices

  • increase in pH toward a pH of 7
  • increase in pH away from a pH of 7
  • decrease in pH toward a pH of 7
  • decrease in pH away from a pH of 7

Discussion

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Source and history

upstream_id / Original problem ID
Mercury_412774
task_id
266b66ec-ae6c-5a96-9ee8-8243bcc2df75
task_key
ARC~2dChallenge--test--Mercury~5f412774
task_revision_id
1
config / split
ARC-Challenge / test

Official source

initial import