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A bottle of copper (II) oxide has been contaminated wit5h some so...

ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Chemistry Gases 2

Question:
A bottle of copper (II) oxide has been contaminated wit5h some solid, NaCI. How can NaCI be removed from the (II) oxide?

Option A):
Add dilute acid to the mixture and filter
Option B):
Heat the mixture and allow it to cool
Option C):
Add water to the mixture and filter
Option D):
Place the mixture in a separating funnel

Correct Answer is Option C):
Add water to the mixture and filter

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