Welcome to the Quiz!
This quiz contains 11 questions from a mix of 1 subtopics.
What is the role of catalysts in a chemical reaction?
to change the equilibrium constant
to increase the activation energy
to slow down the reaction rate
to decrease the activation energy
|
Which type of catalysis occurs when the catalyst is in the same phase as the reaction mixture?
heterogeneous catalysis
autocatalysis
homogeneous catalysis
enzymatic catalysis
|
Which of the following are examples of homogeneous catalysis?
(Select all that apply).
reduction of nitrogen(VI) oxide in catalytic converters by platinum
oxidation of sulfur dioxide catalysed by nitrogen(IV) oxide
oxidation of iodide ions by peroxodisulfate ions catalysed by iron(III)
conversion of nitrogen and hydrogen to ammonia catalysed by iron
|
Peroxodisulfate ions, S2O82-, oxidise ions to .
|
What is the term for the process in which reactant molecules become weakly bonded onto the surface of a solid catalyst?
|
Which of the following gases are converted to harmless products in a catalytic converter?
(Select all that apply).
carbon monoxide
nitrogen oxides
nitrogen
carbon dioxide
|
What is the overall reaction between nitrogen monoxide and carbon monoxide in a catalytic converter?
2NO + 2CO ➔ N2 + 2C + 2O2
2NO2 + 4CO ➔ N2 + 4CO2
2NO + CO2 ➔ N2 + CO
2NO + 2CO ➔ N2 + 2CO2
|
What is the term for the breaking of the bonds between product molecules and the surface of a solid catalyst?
|
What is the overall reaction between nitrogen dioxide and carbon monoxide in a catalytic converter?
2NO2 + 4CO ➔ N2 + 4CO2
2NO + 2CO ➔ N2 + 2CO2
2NO2 + 4CO2 ➔ N2 + 4CO
2NO2 + 2CO ➔ N2 + 2C + 3O2
|
Which type of catalyst has a different physical state from the reactants?
heterogeneous
homogeneous
|
What is the term for a catalyst that has the same physical state as the reactants?
|