Chemistry Quiz

What is the definition of Oxidation?

• Gain of Electrons

• Addition of Hydrogen

• Addition of Oxygen

• Loss of Electrons

Which substance is considered an Oxidizing Agent?

• Hydrogen

• Sulfur Dioxide

• Chlorine

• Potassium

In the reaction 2FeCl2(s) + Cl2(g) -> 2FeCl3(s), what is the Oxidizing Agent?

• Hydrogen Chloride

• Iron (III) Salt

• Chlorine

• Iron (II) Salt

What is the value of 'o' in the equation XO2−4 + 8H+ + o e− -> X2+ + 4H2O?

• 2

• 6

• 4

• 5

Which substance is considered a Reducing Agent?

• Oxygen

• Hydrogen Peroxide

• Sulfur Dioxide

• Chlorine

What is the definition of Reduction?

• Addition of Hydrogen

• Gain of Electrons

• Addition of Oxygen

• Loss of Electrons

In the reaction C(s) + 2ZnO(s) -> CO2(g) + 2Zn(s), what is the Reducing Agent?

• Zinc Oxide

• Oxygen

• Zinc

• Carbon

What is the Oxidation Number of Chromium in Cr2O7^2-?

• +2

• +4

• +6

• +8

What is the balanced equation for the reduction of Cr2O7^2-?

• Cr2O7^2- + 14H+ + 6e- -> 2Cr3+ + 8H2O

• Cr2O7^2- + 14H+ + 6e- -> 2Cr3+ + 6H2O

• Cr2O7^2- + 14H+ + 6e- -> 2Cr3+ + H2O

• Cr2O7^2- + 14H+ + 6e- -> 2Cr3+ + 7H2O

What is the oxidation number of iron in FeO3?

• +4

• +2

• +3

• +5