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Balancing Redox Equations

Authored by Niambi Wills

Chemistry

9th - 12th Grade

NGSS covered

Used 17+ times

Balancing Redox Equations
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14 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which of the following reactions is balanced by both mass and charge?

Fe+2 + Al →Fe + Al+3
Cu + Fe+2 → Cu+1 + Fe+3
F2 + Br- --> F- + Br2
Fe+2 + 2 Cu --> 2 Cu+ + Fe

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which of the following is the balanced half -reaction for the oxidation of Cu to Cu+2?

Cu   --> Cu+2
Cu + 2 e-   --> Cu+2
Cu  --> Cu+2  + 2 e-
Cu - 2e-  --> Cu+2

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What are α and β and γ?

NO3- + α H+ + β e- → NO + γ H2O

α = 2 β = 3 γ = 4

α = 2 β = 2 γ = 2

α = 4 β = 4 γ = 3

α = 4 β = 3 γ = 2

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of these equations represents a redox reaction?

Ca(HCO3)2 --> CaCO3 + H2O + CO2

HC2H3O2 + NaOH --> NaC2H3O2 + H2O

Zn + 2FeCl3 --> ZnCl2 + 2FeCl2

NaCl + AgNO3 --> AgCl + NaNO3

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which element is being oxidized in the following chemical reaction?


2KMnO4 + 5KNO2 + 3H2SO4 --> 2MnSO4 + 3H2O + 5KNO3 + K2SO4

S

Mn

O

N

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which element is reduced in the following reaction?


2K2Cr2O7 + 2H2O + 3S --> 3SO2 + 4KOH + 2Cr2O3

K

Cr

O

S

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Zn    +    HgO

ZnO     +     Hg

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

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