Fe2O3 + 2Al --> 2Fe + Al2O3
Which statement is correct?
REview redox for james
Quiz
•
Chemistry
•
1st Grade
•
Medium
Anis Kristianingrum
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37 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Fe2O3 + 2Al --> 2Fe + Al2O3
Which statement is correct?
Aluminium has been oxidised, iron (III) oxide has been reduced
Aluminium has been reduced, iron (III) oxide has been oxidised
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Fe2O3 + 2Al --> 2Fe + Al2O3
Fe has been reduced from:
+3 to 0
+6 to 0
+3 to +1
+6 to +1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
CO2 + C --> 2CO
Which statement is correct?
Carbon is oxidised from 0 to +2. Carbon is reduced from +4 to +2.
Carbon is reduced from 0 to +2. Carbon is oxidised from +4 to +2.
Carbon is oxidised from +2 to +1. Carbon is reduced from +4 to +2.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2Na + 2H2O --> 2NaOH + H2
Which element is oxidised?
Sodium
Water
Neither
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2Na + 2H2O --> 2NaOH + H2
Which statement is correct?
Hydrogen is oxidised from +1 to 0. Sodium is reduced from 0 to +1.
Hydrogen is reduced from +1 to 0. Sodium is oxidised from 0 to +1.
Hydrogen is reduced from +2 to 0. Sodium is oxidised from 0 to +2.
Hydrogen is oxidised from +2 to 0. Sodium is reduced from 0 to +2.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2Cu2+ + 4I- --> 2CuI + I2
Have the copper ions been:
Reduced from +2 to +1
Oxidised from +2 to +1
Reduced from 0 to +1
Oxidised from 0 to +1
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Cu2O + H2SO4 --> CuSO4 + H2O + Cu
The copper (I) ions have been:
Oxidised
Reduced
Both
Neither
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