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Redox Review25Q

Authored by Pema Wangdak

Chemistry

10th - 12th Grade

NGSS covered

Used 4+ times

Redox Review25Q
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the oxidation number of chlorine in HClO?

0

-1

+1

+5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Reduction is the ___________ of electrons.

loss

gain

sharing

transfer

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The sum of the oxidation numbers in SCN- is equivalent to

0

-1

+1

+3

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Determine the oxidation number of chromate in CrO42-.

+6

0

+2

+3

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the reaction Zn + 2HCl --> ZnCl2 + H2

which element, if any, is oxidized?

Zinc

Hydrogen

Chlorine

None

Tags

NGSS.HS-PS1-2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which statement is true:
Mg → Mg2+ + 2e

Mg gains 2 electrons
Mg2+ loses 2 electrons
Mg loses 1 electron
Mg loses 2 electrons

Tags

NGSS.HS-PS1-2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following half reactions correctly represents a reduction half reaction?

Fe →Fe2+ + 2e-
Pb4+ + 2e- →Pb2+
2O-2 →O2 + 4e-
Fe + 3e- →Fe3+

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

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