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A catalyst ______ the rate of chemical reaction without being consumed.
a. determines
b. equalizes
c. decreases
d. increases
___________ uses a catalyst that is of similar phase of the reactants and products.
a. homogeneous catalysis
b. catalytic reaction
c. heterogeneous catalysis
d. reactant concentration
Rate law reflects ___________.
a. Arrhenius equation and Integrated law
b. reaction time and reactant concentration
c. molecularity and order of reaction
d. activation energy and collision theory
Chemical kinetics is the study of ____________.
a. collision theory
b. molecularity
c. reaction rates
d. reactant concentration
_______ is a variable in Arrhenius equation. *
a. reactant concentration
b. order of reaction
c. reaction rate
d. temperature
___________ provides a linear equation that allows for the calculation of the concentration of a reactant at a specific time in the reaction. *
a. Chemical kinetics
b. Arrhenius equation
c. Integrated rate law
d. catalysts
Reaction rates can be explained using the concepts of collision theory and __________.
a. Arrhenius equation
b. Chemical kinetics
c. activation energy
d. progress of reaction
A reaction mechanism may occur in two or more elementary steps. The slowest among these steps is the _____________.
a. reaction intermediate step
b. overall reaction
c. rate - determining step
d. reaction rate
Reaction rates are affected by reactant concentration and _________.
a. time
b. temperature
c. collision
d. activation
1. When 10g of N2 and 7g H2 are allowed to react. Determine the limiting reactant and excess reactant in this reaction.
N_{2}+H_{2} ->NH_{3}
Given:
Find:
Solution:
TEST 2. PROBLEM SOLVING
Solve the problem below. Show your answers legibly, concisely, and completely. Use the back portion if necessary.
1. Determine the limiting reactant and excess reactant, when 36g of Al and 28.5g of HBr are reacted and how many grams of H_{2} gas are formed?
Al + HBr -> AlB*r_{3} + H_{2}
Given:
Find:
Solution:
Problem: If 68 g of Zn reacts with 27.5 g of HCl. Use the chemical equation to answer the following questions below.
Zn + 2HCl -> ZnC*l_{2} + H_{2}
1. What is the molar mass of Zn?
2. What is the molar mass of HCI?
3. What coefficient is indicated in HCI?
4. Which substance is limiting reactant?
5. Which substance is excess reactant?
6. What is the molar mass of ZnCl_{2} ?
If you react 5.625 L of H2S in excess oxygen, how many grams of water will be produced
Explain this phrase: "likes dissolves like"
