Chemical Reaction Flashcards

(40 cards)

1
Q

What is Chemical Reaction?

A

Chemical changes in which new substances are formed

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2
Q

What is a Precipitation Reaction?

A

In this reaction, mixing of solutions of two ionic
substances and a solid ionic substance (precipitate) form.

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2
Q

What is an Acid - Base Reaction?

A

An acid reacts with a substance called a base. Such reaction involves the transfer of a proton between reactants.

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2
Q

What are the rules of solubility for Li⁺, Na⁺, K⁺, and NH₄⁺?

A

Group 1A and ammonium compounds are soluble.

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2
Q

What are the rules of solubility for C₂H₃O₂⁻, and NO₃⁻

A

Acetates and nitrates are soluble

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2
Q

What are the rules of solubility for
Cl⁻, Br⁻, and I⁻

A

Most chlorides, bromides, and iodides are soluble

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2
Q

What are the exceptions to the Cl⁻, Br⁻, and I⁻ solubility rules

A

Bromides, Chlorides, and iodides of Silver (Ag), Mercury (Hg), and Lead (Pb) are insoluble

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2
Q

What are the rules of solubility for SO₄²⁻

A

Most sulphates are soluble

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2
Q

What are the exceptions to the SO₄²⁻ solubility rules

A

Sulphates of Calcium (Ca), Strontium (Sr), Barium (Ba), Silver (Ag), Mercury (Hg), and Lead (Pb) are insoluble

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2
Q

What are the rules of solubility for CO₃²⁻

A

Most carbonates are Insoluble

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2
Q

What are the exceptions to the CO₃²⁻ solubility rules

A

Carbonates of Group 1A and Ammonium are soluble

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2
Q

What are the rules of solubility for PO₄³⁻

A

Most phosphates are insoluble

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2
Q

What are the exceptions to the PO₄³⁻ solubility rules

A

Phosphates of Group 1A and Ammonium are soluble.

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2
Q

What are the rules of solubility for S²⁻

A

Most sulphides are insoluble.

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2
Q

What are the exceptions to the S²⁻ solubility rules

A

Sulphides of Group 1A and Ammonium are soluble.

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2
Q

What are the rules of solubility for OH⁻

A

Most Hydroxides are insoluble

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2
Q

What are the exceptions to the OH⁻ solubility rules

A

Hydroxides of Group 1A, Calcium (Ca), Strontium (Sr), and Barium (Ba) are soluble

2
Q

What are the rules of solubility for CrO₄²⁻?

A

Most chromates are in soluble

2
Q

What are the exceptions to the CrO₄²⁻ solubility rules

A

Chromates of Group 1A and Ammonium are soluble

2
Q

What is the Formular Equation?

A

It gives the overall reaction stoichiometry and all reactants
and products are shown as neutral compounds.

2
Q

What is the Complete Ionic Equation?

A

It represents as ions all the cations and anions of a compound in solution is shown separately

3
Q

What is an Oxidation-Reduction (Redox) Reaction

A

A reaction in which electrons are transferred from one atom to another

4
Q

What is a Net Ionic Equation

A

It focuses only on the species that have undergone a change in the
reaction.

4
Q

What is a Combination Reaction

A

A combination reaction is a reaction in which two
substances combine to form a third substance

4
What is a Decomposition Reaction
A decomposition reaction is a reaction in which a single compound reacts to give two or more substances; these reactions occur when the temperature is raised
4
What is the algebraic sum of the oxidation numbers in a covalent compound
The algebraic sum of the oxidation numbers in a covalent compound is zero.
4
What is a Displacement Reaction
Displacement reaction involves the replacement of one element (or ion) by another element (or ion) in a compound
4
What is a Neutralization Reaction
A reaction of an acid and a base resulting in an ionic compound and possibly water.
4
What is a Combustion Reaction
A type of chemical reaction where a substance reacts with oxygen (O₂) to produce energy in the form of heat and light
5
What is the oxidation number for elements in their uncombined states
Element in their uncombined states (standard states) have an oxidation number of zero.
5
What is the oxidation number of Oxygen
Oxygen has an oxidation number of -2 -Except I) In F2O where it has a value of +2 I) Peroxide such as H2O2 and Na2O2 where it has a value of -1
6
What is the oxidation number Hydrogen
Hydrogen has a oxidation number of +1 -Exceptions in the metallic hydrides such as where it has a value of -1
7
What is the oxidation number for Alkali Metals
In all compounds alkali metal is +1, alkaline earth metal is +2, B, Al is +3
8
What is the oxidation number for Alkali Earth Metals
alkaline earth metal is +2
9
What are the oxidation number for Boron (B) and Aluminum (Al)
+3
10
What is te oxydation number for Halogens?
-1
11
How does electronegativity factor in oxidation number?
The element of high electronegativity has a negative oxidation number and the element of low electronegativity has a positive oxidation number
12
Know how to balance a redox equation by Half Reaction Method
13
Know how to balance a redox equation in Acidic and Basic Medium
13
Know how to balance a redox equation by Oxidation Number Method