M5S15 – REDOX equations from half-equations


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REDOX equations from half-equations

1 / 12

Using your half-equations from questions 10 & 11, balance the REDOX equation below.

S2O32- + I2 => S4O62- + I-

Select the integers that represent the ratio of species in the overall balanced REDOX equation.

If this question appears in a Random Retrieval quiz, you would be best constructing separate half-equations for the species that is oxidised and the species that is reduced prior to working out the overall REDOX equation.

2 / 12

Work out the ratio of the species in the following half-equation.

I2 + e- => I-

 

I2 = [1] 1 [2] 2 [3] 3 [4] 4 [5] 5 [6] 6

e- = [7] 1 [8] 2 [9] 3 [10] 4 [11] 5 [12] 6

I- = [13] 1 [14] 2 [15] 3 [16] 4 [17] 5 [18] 6

3 / 12

Work out the ratio of the species in the following half-equation.

S2O32- => S4O62- + e-

4 / 12

Using your half-equations from questions 7 & 8, balance the REDOX equation below.

NO3- + H+ + Cu => Cu2+ + NO2 + H2O

Select the integers that represent the ratio of species in the overall balanced REDOX equation.

If this question appears in a Random Retrieval quiz, you would be best constructing separate half-equations for the species that is oxidised and the species that is reduced prior to working out the overall REDOX equation.

5 / 12

Work out the ratio of the species in the following half-equation.

Cu => Cu2+ + e-

6 / 12

Work out the ratio of the species in the following half-equation.

NO3- + H+ + e- => NO2 + H2O

7 / 12

Using your half-equations from questions 4 & 5, balance the REDOX equation below.

BrO3- + H+ + C2O42- => CO2 + Br- + H2O

Select the integers that represent the ratio of species in the overall balanced REDOX equation.

If this question appears in a Random Retrieval quiz, you would be best constructing separate half-equations for the species that is oxidised and the species that is reduced prior to working out the overall REDOX equation.

8 / 12

Work out the ratio of the species in the following half-equation.

C2O42- => CO2 + e-

9 / 12

Work out the ratio of the species in the following half-equation.

BrO3- + H+ + e- => Br- + H2O

10 / 12

Using your half-equations from questions 1 & 2, balance the REDOX equation below.

O2 + H+ + Br- => Br2 + H2O

Select the integers that represent the ratio of species in the overall balanced REDOX equation.

If this question appears in a Random Retrieval quiz, you would be best constructing separate half-equations for the species that is oxidised and the species that is reduced prior to working out the overall REDOX equation.

11 / 12

Work out the ratio of the species in the following half-equation.

O2 + e- + H+ => H2O

12 / 12

Work out the ratio of the species in the following half-equation.

Br- => Br2 + e-

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