RP9- pH changes Flashcards

1
Q

Why does a pH meter have to be calibrated?

A

so that the values for each reading are accurate

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2
Q

How can you investigate how a weak acid’s pH changes as a strong base is added?

A
  • eg CH3COOH and NaOH
  • add small amounts of NaOH each time
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3
Q

Why is stirring the solution important?

A

so all acid and base is thoroughly mixed, so pH doesn’t vary

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