Reaction Rate

Question 1

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below.MgO(s) + 601.7 kJ Mg(s) + ½O2(g)Which factor plays the most important role in allowing this reaction to occur?

Revolt · Accepted Answer

temperature

Question 2

A change in which factor will affect the rate of reaction only when gases are involved?

Revolt · Accepted Answer

pressure

Question 3

Which will cause an increase in the reaction rate between molecules?

Revolt · Accepted Answer

Molecules collide more frequently.

Question 4

Which term refers to the speed at which reactants are converted into products?

Revolt · Accepted Answer

reaction rate

Question 5

A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?

Revolt · Accepted Answer

Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Question 6

An increase in temperature affects the reaction rate by

Revolt · Accepted Answer

increasing the number of molecules that have sufficient kinetic energy to react.

Question 7

Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?

Revolt · Accepted Answer

More molecules in the sawdust can collide with oxygen molecules.

Question 8

Which applies to the collision theory?

Revolt · Accepted Answer

Particles need to collide in order to react.

Reaction Rate Answers

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