Hydrates Chemistry.

Slides:



Advertisements
Similar presentations
Aqueous Solutions Section 17.3.
Advertisements

Chapter 12 Stoichiometry Part 3. PERCENT YIELD Most reactions never succeed in producing the predicted amount of product. So in order to determine the.
The Mole. The Mole: An expression of the quantity of matter. The quantity of matter is referred to a representative particles. One mole = x 10.
It’s just like finding out your test score!!! 97 correct out of 100 questions = 97 x 100 = 97% 100 Total of “something” x 100 = % TOTAL.
Ch.5 (Types of compound ) Section 1(Ionic Compound) Gr.10 /Chemistry/LC3 Nagham Hussam Chemistry Teacher.
Chapter 17 Section 3 aqueous solution- water sample containing dissolved substances solvent- dissolving medium, what does the dissolving *water is known.
Unit 6: The Mathematics of Chemical Formulas
“A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal” HYDRATES.
15.2 Chemistry.
HYDRATES “A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal”
Percentage Composition
Salts part 2. Starter How many words can you think of that start an- ? What do they each mean?
Copyright Sautter 2003 HOW ARE THE CHEMICAL FORMULAS FOR COMPOUNDS DETERMINED? THEY CONTAIN WATER !! WE ARE GOING TO CARRY OUT AN EXPERIMENT TO FIND.
MOLAR MASS. WHAT IS MOLAR MASS?  Molar mass is the weight of one mole (or 6.02 x molecules) of any chemical compounds. Molar masses of common chemical.
Chapter 10: Chemical Quantities
Chapter 5: Types of Compounds
Ionic Compounds Ions are atoms that have gained or lost electron(s) Atoms tend to make ions with characteristic oxidation states (charges) Metals are losers.
PROPERTIES ASSOCIATED WITH WATER
Water of crystallisation
Covalent Bonding Sec. 8.2: Naming Molecules.
The Mole Chapter 11 Chemistry RiverDell High School Ms. C. Militano
Water and Aqueous Systems
Chapter 5 Types of Compounds
Section 9.3—Analysis of a Chemical Formula
Hydrates Water molecules can adhere to ions as the solid forms The water becomes trapped and is part of the crystal Opals and other gems are common hydrates.
Waters of Hydration.  Some molecules exist in nature in relationship with water. Water just seems to be attracted to the molecules and it is possible.
What is a compound? A substance in which the atoms of two or more different elements combine together Sodium chloride NaCl Carbon dioxide CO 2 Calcium.
Chemical Family Resemblances
IIIIII II. Formula Calculations Ch. 10 – The Mole.
Chapter 15 – Water and Aqueous Systems Water has some unusual properties. It has a high boiling point for a compound that has a small molar mass. The solid.
Almost Done Naming… Gasses, Acid Salts and Hydrates.
Review for chapter 8 Problem-solving practice. Calculating masses 1) Calculate the molecular mass of pentane 2) Calculate the formula mass of calcium.
THE MOLE Chapter 10: Chemical Quantities Measuring Matter What is a mole? It is the SI unit that measures the amount of substance.
Hydrates Hydrates are compounds that have a specific number of water molecules attached to them. An anhydrous compound is one that has no water A dehydrated.
Molar Mass. How to find the molar mass of a compound. 1. Write the correct formula: Calcium chloride, CaCl 2 2. List all individual elements 3. Determine.
 substances that include water into their formula  water is not actually part of the chemical substance and this is reflected in the way the formula.
Water of crystallisation
Warmup 11/19/15 Tell me a story about something that can soak up water Objective Tonight’s Homework To learn how chemicals can absorb and hold water pp.
Percent Composition Percent by mass of an element in a compound.
Aim: How to calculate Percent Composition  DO NOW: 1. What is the number of moles of potassium chloride present in 148 g? 2. What is the molar mass of.
J OURNAL #72 How many moles of compound are there in 6.00g of ammonium sulfate? How many molecules are there in 20.0g sulfuric acid?
Molecular formulas, Molecular Mass, properties and hydrates Unit 5 Notes #5.
According to the Law of Definite Proportions, a chemical compound always contains the same proportion of elements by mass. Consequently, if we know.
Molar Relationships.
Hydrates (11.5) Hydrate- compound with a specific amount of water molecules bound to it.
Percentage Composition
Percent Composition, Empirical Formulas, Molecular Formulas
Water of crystallisation
Solutions.
6.7 – NOTES Hydrates.
Chapter 15 Water and Aqueous Systems 15.2 Homogeneous Aqueous Systems
Aim: How to calculate Percent Composition
Calculation of Molecular Formula
15.2 Hydrates A compound that contains water of hydration is called a hydrate. In writing the formula of a hydrate, use a dot to connect the formula of.
Chapter 15 “Water and Aqueous Systems”
Homogeneous Aqueous Systems
An aqueous solution is water that contains dissolved substances.
Mole problems with compounds
Ch. 10 – The Mole Hydrates.
Percent Composition, Empirical Formulas, Molecular Formulas
“A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal” Hydrates.
Percent Composition, Empirical Formulas, Molecular Formulas
Percent Composition, Empirical Formulas, and Molecular Formulas
Bellwork Tuesday Today we are learning about solutions.
PROPERTIES ASSOCIATED WITH WATER
Mrs. Coyle Honors Chemistry
“A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal” Hydrates.
Chapter 12 Stoichiometry Part 3
Percent Composition In your books pg
Using Chemical Formulas
Presentation transcript:

Hydrates Chemistry

Hydrates  A class of compounds containing chemically combined water. Usually, the water is loosely held and easily lost on heating. Since the water is loosely held, it will evaporate or be pulled from the air depending on the vapor pressure of the chemical. To write hydrates, use a dot: CuSO4∙5H20

Efforescent hydrates – high vapor pressure, easily evaporate Hygroscopic hydrates – low vapor pressure, take water from the air (dessicants) Deliquescent substances will actually remove enough water from the air to dissolve themselves and form a solution.

Calculate the percent by mass of water in sodium carbonate decahydrate.

Na2CO3∙10H20 2Na = 46 C = 12 180 X 100 = 62.9% 3O = 48 286 20H = 20 10O = 160 286 g Calculate % water in copper (II) sulfate pentahydrate

CuSO4∙5H2O Cu 64 90 X 100 = 36% S 32 250 4O 64 5H20 90 250 Calculate % water in calcium chloride hexahydrate

CaCl2∙6H20 Ca 40 108 X 100 = 49.5% 2Cl 70 218 6H20 108 218