Chemistry Unit 7

Front 1

________ ____ is the change in concentration of reactants or products in a chemical reaction per unit of time

Back 1

Reaction Rate

Front 2

A traditional substance that results when reactant bonds are broken, and persists while product bonds are being formed, is an activated _______

Back 2

Complex

Front 3

Find the H for the reaction
2HCl(aq) + Ca(OH)2(s) -> CaCl2(s) + 2H2O(l)

Back 3

H = -47.1kJ

Front 4

_______, which is a measure of the energy that is unavailable to perform work, is also the measure of randomness, or disorder, of a thermodynamic system.

Back 4

Entropy

Front 5

Which is the branch of chemistry that studies the heat transfers that accompany chemical or physical changes?

Back 5

Thermochemistry

Front 6

The study of the relationship between heat and work within chemical reactions or physical changes of state is called chemical ______________

Back 6

Thermodynamics

Front 7

The amount of energy that is transferred when one mole of a compound is formed from its component elements in their standard states is the ________ _____ ________ __ _________

Back 7

Standard Molar Entholpy Of Formation

Front 8

The total amount of energy in a thermodynamic system is called ________

Back 8

Enthalpy

Front 9

___________ is the measurement of enthalpy changes caused by chemical reactions, changes of state, or the formation of a solution.

Back 9

Calorimetry

Front 10

What is the name for the minimum energy required to start a chemical reaction?

Back 10

Activation

Front 11

What is the name given to the amount of heat transferred during the complete combustion of one mole of a reactants in its standard state?

Back 11

Standard Molar Enthalpy Of Combustion

Front 12

You are conducting a calorimetry experiment using a calorimeter with 500mL of water in its outer chamber to determine the enthalpy of reaction of a chemical reaction. The initial temperature of the water is 25C. After the reaction, the temperature of the water is 62.8C. Disregarding any heat loss to the walls of the container, calculate the H. The specific heat of water is 4.18J/(g*K)

Back 12

H = -79.00kJ

Front 13

Which name is given to the tendency of a reaction to occur without the application of outside force or energy to sustain the reaction?

Back 13

Reaction Spontaneity

Front 14

Calculate the G of the following reaction and state whether it is spontaneous at standard temperature or not.

2HCl(aq) + Ca(OH)2(s) -> CaCl2(s) + 2H2O(l)

Back 14

-61.5kJ, yes

Front 15

What is the name given to the state of substance is (solid, liquid, or gas) at room temperature (25C or 298K) and a pressure of 100 kPa?

Back 15

Standard State

Front 16

The law that states that the overall enthalpy change in a reaction is the same whether it occurs in one step or a series of steps is ______ law.

Back 16

Hess's

Front 17

A chemical reaction in which the reactants are converted into products without the constant addition of energy from outside the thermodynamic system to sustain the reaction is a(n) ___________ reaction.

Back 17

Spontaneous

Front 18

The scientific law that states that the total amount of energy in a thermodynamic system remains constant is called ___ __ ____________ __ ______

Back 18

Law Of Conservation Of Energy

Front 19

What is the name of the term that refers to the reactants, products, and chemical processes that accompany a chemical reaction? _____________ ______

Back 19

Thermodynamic System

Front 20

Which of the following factors can affect reaction rate?

The presence of a catalyst

The location of the experiment

Concentration of the reactants

The container used

The temperature of the system

The inherent properties of the reactants

The surface area of the reactants

Back 20

The presence of a catalyst

Concentration of the reactants

The temperature of the system

The inherent properties of the reactants

The surface area of the reactants

Front 21

The thermodynamic function called _____ free energy measures the capacity of a system to perform work

Back 21

Gibbs

Front 22

What is the field of chemistry that deals with reaction mechanisms and reaction rates?

Back 22

Reaction Kinetics

Front 23

What is the name given to the amount of heat transferred when the number of moles of reactants specified in a chemical equation is completely converted into products in their standard states?

Back 23

Standard Molar Enthalpy Of Reaction

Front 24

The overall sequence of steps that makes up a chemical reaction is called the reaction _________.

Back 24

Mechanism