PORTAGE CHEM 104 MODULE 1 STUDY
GUIDE QUESTIONS WITH
100%VERIFIED ANSWERS
Kinetics - correct answer...✔✔the study of rates of reactions and how they are
influenced by certain factors
Influences Reactions Rates - correct answer...✔✔Concentration, temperature,
catalysts, surface area
Temperature/Reaction Rate - correct answer...✔✔Increase, higher temperature
provides higher kinetic energy
Catalyst/Reaction Rate - correct answer...✔✔Increase, without being consumed
Surface Area/Reaction Rate - correct answer...✔✔Increase, increased surface area of
particles increases reaction rate because solids only react at their surfaces (grinding
solid into fine powder)
Concentration/Reaction Rate - correct answer...✔✔Increase, provides more reacting
particles to undergo reaction
Reaction Rate - correct answer...✔✔Increase in molar concentration of product per unit
of time or the decrease in molar concentration per unit of time
Reaction Rate Units - correct answer...✔✔moles per liter per second (mol/L*s)
Reaction Rate Equation - correct answer...✔✔Change in concentration/change in time
(products=positive, reactants=add negative sign)
Average Rate - correct answer...✔✔Determined by using initial and final concentrations
and initial and final times so that the result measures the rate over the entire reaction
Instantaneous Rate - correct answer...✔✔The change in concentration of reactants (or
products) divided by a very short period of time
Instantaneous Rate Decreases... - correct answer...✔✔Decreases, as reaction
proceeds, concentration of reactant becomes smaller due to consumption of reactants
as reaction takes place
AGRADESOLUTIONS
, Early Instantaneous Rate - correct answer...✔✔The change in concentration of
reactants (or products) divided by a very short period of time near the beginning of the
reaction
Late Instantaneous Rate - correct answer...✔✔The change in concentration of
reactants (or products) divided by a very short period of time at the end of the reaction
Relative Values of Average Rate, Early Instantaneous Rate, and Late Instantaneous
Rate - correct answer...✔✔The early instantaneous rate will be greater (most reactant)
than the late instantaneous rate or the average rate. The late instantaneous rate will be
smaller (less reactant) than the early instantaneous rate or the average rate.
Rate Law - correct answer...✔✔Mathematical equation that describes the dependence
of the reaction rate on the concentrations of some of the reactants
Equation for Rate Law - correct answer...✔✔rate = k [A]^x[B]^y
K - correct answer...✔✔rate constant
order with respect to a reactant - correct answer...✔✔Exponent of concentration in rate
law
Zero Order - correct answer...✔✔Rate does not change if the concentration of that
reactant is changed (uncommon)
Experimentally - correct answer...✔✔How rate law must be determined
To Compare Rates - correct answer...✔✔rate1 / rate2 = k[A1]^x[B1}^y / k[A2]^x[B2]^y
First Order - correct answer...✔✔Rate is directly proportional to the concentration of
one of the reactants
Second Order - correct answer...✔✔Rate is proportional to the square of the
concentration of one of the reactants
Zero Order Reaction Rate Law & Units - correct answer...✔✔r = k, mol/L*s
First Order Reaction Rate Law & Units - correct answer...✔✔r = k [A], 1/sec
Second Order Reaction Rate Law & Units - correct answer...✔✔r = k [A]^2, L/mol*s
Half-Life Purpose - correct answer...✔✔Shows how reactant concentration varies over
a period over time
AGRADESOLUTIONS
GUIDE QUESTIONS WITH
100%VERIFIED ANSWERS
Kinetics - correct answer...✔✔the study of rates of reactions and how they are
influenced by certain factors
Influences Reactions Rates - correct answer...✔✔Concentration, temperature,
catalysts, surface area
Temperature/Reaction Rate - correct answer...✔✔Increase, higher temperature
provides higher kinetic energy
Catalyst/Reaction Rate - correct answer...✔✔Increase, without being consumed
Surface Area/Reaction Rate - correct answer...✔✔Increase, increased surface area of
particles increases reaction rate because solids only react at their surfaces (grinding
solid into fine powder)
Concentration/Reaction Rate - correct answer...✔✔Increase, provides more reacting
particles to undergo reaction
Reaction Rate - correct answer...✔✔Increase in molar concentration of product per unit
of time or the decrease in molar concentration per unit of time
Reaction Rate Units - correct answer...✔✔moles per liter per second (mol/L*s)
Reaction Rate Equation - correct answer...✔✔Change in concentration/change in time
(products=positive, reactants=add negative sign)
Average Rate - correct answer...✔✔Determined by using initial and final concentrations
and initial and final times so that the result measures the rate over the entire reaction
Instantaneous Rate - correct answer...✔✔The change in concentration of reactants (or
products) divided by a very short period of time
Instantaneous Rate Decreases... - correct answer...✔✔Decreases, as reaction
proceeds, concentration of reactant becomes smaller due to consumption of reactants
as reaction takes place
AGRADESOLUTIONS
, Early Instantaneous Rate - correct answer...✔✔The change in concentration of
reactants (or products) divided by a very short period of time near the beginning of the
reaction
Late Instantaneous Rate - correct answer...✔✔The change in concentration of
reactants (or products) divided by a very short period of time at the end of the reaction
Relative Values of Average Rate, Early Instantaneous Rate, and Late Instantaneous
Rate - correct answer...✔✔The early instantaneous rate will be greater (most reactant)
than the late instantaneous rate or the average rate. The late instantaneous rate will be
smaller (less reactant) than the early instantaneous rate or the average rate.
Rate Law - correct answer...✔✔Mathematical equation that describes the dependence
of the reaction rate on the concentrations of some of the reactants
Equation for Rate Law - correct answer...✔✔rate = k [A]^x[B]^y
K - correct answer...✔✔rate constant
order with respect to a reactant - correct answer...✔✔Exponent of concentration in rate
law
Zero Order - correct answer...✔✔Rate does not change if the concentration of that
reactant is changed (uncommon)
Experimentally - correct answer...✔✔How rate law must be determined
To Compare Rates - correct answer...✔✔rate1 / rate2 = k[A1]^x[B1}^y / k[A2]^x[B2]^y
First Order - correct answer...✔✔Rate is directly proportional to the concentration of
one of the reactants
Second Order - correct answer...✔✔Rate is proportional to the square of the
concentration of one of the reactants
Zero Order Reaction Rate Law & Units - correct answer...✔✔r = k, mol/L*s
First Order Reaction Rate Law & Units - correct answer...✔✔r = k [A], 1/sec
Second Order Reaction Rate Law & Units - correct answer...✔✔r = k [A]^2, L/mol*s
Half-Life Purpose - correct answer...✔✔Shows how reactant concentration varies over
a period over time
AGRADESOLUTIONS
