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Cards in this guide (17)
What is an oxidizing agent

A substance that oxidizes another substance

Any chemical substance that has a tendency to accept electrons and thereby undergoing reduction themselves is known as an oxidising agent.

An oxidizer is a compound that supplies its own oxygen and heat when in contact with organic compounds. These chemicals that can react vigorously and explode.

Oxidizers are compounds which are capable of reacting with and oxidizing (i.e., giving off oxygen) other materials. A well known example of oxidation is the process we know as corrosion, where the metal reacts with air to form the metal oxides referred to as "rust".

The primary hazard associated with this class of compounds lies in their ability to act as an oxygen source, and thus to readily stimulate the combustion of organic materials. As you may recall, it takes three components for a fire to happen - a fuel source (usually an organic compound, such as paper), an ignition source (such as a flame, a spark, friction, etc.) and an oxygen source (in this case - a cylinder of OXYGEN, a strong oxidizer).

Oxidizers may be grouped into 4 classes based on their ability to affect the burning rate of combustible materials or undergo self-sustained decomposition. This classification system was established by the National Fire Protection Association (NFPA 43A, 1980) as a means to provide information on safe storage of oxidizing materials.

Class 1: An oxidizing material whose primary hazard is that it may increase the burning rate of combustible material with which it comes in contact

Class 2: An oxidizing material that will moderately increase the burning rate of which may cause spontaneous ignitionof combustible material with which it ocmes in contact.

Class 3: An oxidizing material that will cause a severe increase in the burning rate of combustible material with which it comes in contact or which will undergo vigorous self-substained decomposition when catalyzed or exposed to heat.

Class 4: An oxidizing material that can undergo an explosive reaction when catalyzed or exposed to heat, shock or friction.

What happens in a redox reaction

Electrons are transferred between atoms.

How is stoichiometry used

Stoichiometry is used to find the molar ratios between the reactants of a chemical reaction.

How can you tell for sure that a redox reaction has happened

if oxidation states change, it is a redox reaction

What are the oxidation states of the atoms in a diatomic gas

the oxidation states are always 0 for both atoms

What happens at the cathode in an electrolytic cell

Reduction occurs at the cathode in an electrolytic cell.

Which element is the reducing agent in a redox reaction

The reactant that has the atom that gets oxidized

Which of the following best describes a galvanic cell

A battery containing a spontaneous redox reaction

Which is the least likely to be reduced

Mg2+

What pieces of information is given in a half reaction

The number of electrons transferred in the reaction . . APEX c;

Reduction occurs at which electrode

The electrode that removes ions from solution

Which the following is a necessary product of a combustion reaction

heat

What are the half reactions for a galvanic cell with Zn and Mg electrodes apex

-2.71 V

How does the oxidation state of Na change in the following reaction Li NaOH LiOH Na

It goes from +1 to 0

Hydrogen-powered cars create less pollution than gasoline-powered cars when driven. What might be a challenge to using hydrogen as a fuel

Challenges to hydrogen as fuel include no distribution network, ie gas stations, and fear that the car co u l d explode like the Hindenburg.

Is not a concern regarding the use of corn as a biofuel

The color of corn is different than the color of gasoline or coal

APEX

Which is the most likely to be reduced

something about "native" should be ur answer..apex

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