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Question 0

Consider the equation below:

Cr\(_2\)O\(_7 ^{2-}\) + 6Fe\(^{2+}\) + 14H\(^{+}\) \(\to\) 2Cr\(^{3+}\) + 6Fe\(^{3+}\) + 7H\(_2\)O.

The oxidation number of chromium changes from

  • A.+5 to +3
  • B.+6 to +3
  • C.-2 to +3
  • D.+7 to +3
  • E.
Objective

Question details

Exam body
JAMB
Subject
Chemistry
Year
2019
Question no.
#0
Type
Objective
Previous · Q0Which of the following pairs cannot be represented with a chemical formula? Next · Q0 Which of the following is a physical change?

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