1.1 Rate Law

A reaction has the rate law: Rate = k [A][B].
What is the order of reaction with respect to A?

• 1st
• 2nd
• 3rd
• 4th

A possible rate law for a third overall order of a reaction is __________________

• Rate = k [A]²[B]²
• Rate = k [A][B]³
• Rate = k [A]³ [B]
• Rate = k [A]²[B]

The rate law of any chemical reaction 

• must be determined experimentally
• can be deduced based on the stoichiometry of the reaction
• changes based on the condition of the experiment
• I don't know

The following data were measured for the reaction BF₃(g) + NH₃(g) —> F₃BNH₃(g)

What is the rate law for the reaction? 

• R=K[NH₃]
• R=K[BF₃]²[NH₃]
• R=K[BF₃][NH₃]
• R=K[BF₃][NH₃]²

The rate law for the reaction 2NO_(g) + O_2(g) → 2NO_2(g) is first order in O₂ and third order overall. What is the rate law for the reaction?

• Rate = k [NO]²[O₂]²
• Rate = k [NO]¹[O₂]²
• Rate = k [NO]²[O₂]¹
• Rate = k [2NO]²[O₂]¹

What is the letter used to represent the Specific rate constant?

• t

• p

• k

• l

If we double the concentration of a reactant and the rate quadruples, what rate order is this?

• first order

• second order

• third order

• eighth order

What is Half-life?

• The amount of time it takes for some of the nuclei in a sample of the isotope to decay
• The amount of time it takes for half the electrons in a sample of the isotope to decay
• The amount of time it takes for half the nuclei in a sample of the isotope to decay
• the amount of time it takes to double the nuclei in a sample of the isotope to decay

The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 2.4 minutes has elapsed?

• 100.0g

• 50.0g

• 12.5g

• 8.5g