Salt soluble? yes, then choose an acid and a base base soluble? yestitrationno excess base no precipitation choose two soluble salts.

Slides:

Advertisements

Similar presentations

Preparation of Salts By SK Chan. Preparing sodium chloride Add NaOH to HCl slowly to get a neutral solution. (How?) Concentrate the solution by evaporation.

Advertisements

HW # 12 – Read Class Notes; Complete Handout Front Side Only! Aim: How much solute can a solvent hold? Do Now: Based on Reference Table F, which of these.

Qualitative Analysis Chemistry. What is qualitative analysis Qualitative analysis is used to determine the chemical composition of an unknown substance.

TESTING FOR CATIONS QUALITATIVE ANALYSIS.

Lesson 5 Learning Objectives: Describe the test for specific negative ions Explain how precipitation reactions can be used as the test for some ions.

Solution of different salts

KNOCKHARDY PUBLISHING

Topic 9 Reactions of Acids.

REFER TEXT BOOK : PAGE 138 EXAMPLE : Metal ions Ammonium ion replace Ammonium chloride Sodium chloride.

CHEMISTRY DEPARTMENT WAID ACADEMY Standard Grade Topic 9.

 All salts are ionic compounds.  A salt is formed when a metallic ion or an ammonium ion (NH 4 + ) replaces one or more hydrogen ions of an acid. HClNaCl.

Topic 9 Reactions of Acids.

Making Salts Soluble salt Insoluble salt Acid + excess insoluble solid

C4 Lesson 16 – Testing Water. After studying this topic, you should be able to: recall the tests for sulfate ions and halide ions in water write word.

Ions In Solution.

Preparation of Salts.  In a acid-base reaction, a salt is formed when a metallic ion or an ammonium ion replaces one or more hydrogen ions in an acid.

Reactions of Acids Neutralisation

7.2 Making Salts What is made when acids and metals react? What is made when alkalis and metals react? 27 August 2015 Bonneville salt flats in America.

7.3 Making salts from solutions Soluble or insoluble? What do these terms mean? 17 September 2015 Fertilisers Water Treatment.

C2- Chemistry Analysing substances, making salts, acids and bases

Say we start with a strong alkali containing Universal indicator, and gradually add acid The alkali will gradually get.

Preparation for Practical chemistry Exercise on Chemistry Paper 4= 2014= form 5.

NCEA L1 Science Science NCEA L1 1.8 Chemical reactions.

Salts By Amy Badger.

Making salts (1). How do we make salts? A salt is a compound formed when a metal or an ammonium group (NH 4 + ) replaces hydrogen in an acid. Many salts.

11.3 REACTIONS IN AQUEOUS SOLUTIONS. Earth’s surface is 70% water….

Acids alkalis and salts

2j Preparing and analysing. Last lesson - Precipitation reactions Reactions that produce an INSOLUBLE SALT.

Chemical tests to identify anions

2j Preparing and analysing

Types of Reactions. In Chemistry, we can identify a lot of different types of chemical reactions. We can put these chemical reactions into groups, so.

CCBAB Compound ABCompound CD AD Compound ADCompound CB D ++ Magnesium Chloride MgCl 2 Calcium Hydroxide Ca(OH) 2 Magnesium Hydroxide Mg(OH) 2 Calcium Chloride.

Some Terminology Soluble – Will dissolve in a solvent Insoluble – Will not dissolve in a solvent Solvent – The substance that dissolves the solute Solute.

Making salts (3): precipitation. Soluble or insoluble? Insoluble salts are made by mixing two soluble compounds. The solid obtained when solutions of.

What does soluble and insoluble mean?

Compounds in Aqueous Solutions When dissolved in water, ionic and molecular compounds behave differently.

Acids and Alkalis Year 11. CONTENTS Acidity and alkalinity Indicators pH Acids General methods for making salts Making salts from metal oxides Making.

Colour changes for simple indicators IndicatorColour in acidColour in alkali litmusredblue methyl orangeredyellow phenolphthaleincolourlessred.

A cids Bases & Salts (Salts) an e-learning series by ycs.

Identifying Ions Noadswood Science, 2013.

Salts Noadswood Science, 2012.

Solubility Noadswood Science, 2012.

Diluting a solution Amount of moles of solute before dilution Amount of moles of solute after dilution = c D V D = c C V C Practice problems: p. 321.

Stoichiometry It’s Finally Here!. What in the world is Stoichiometry? Stoichiometry is how we figure out how the amounts of substances we need for a.

Filtration Lab E. Haniff. Aim:  To separate a mixture of sand and copper sulphate salt (to obtain the solid components)

iGCSE chemistry Section 4 lesson 1

Making Salts Insoluble salts – precipitation Mix two solutions together one with the cation, one with the anion. Filter, wash and dry. Soluble Na +, K.

AS Revision Lessons Identification tests.

Inorganic Analysis Fish!. Pick a question!

Making insoluble salts

Chemical Changes and Structure

Precipitate Testing.

Acids and Alkalis.

Acids and Alkalis Grade 10.

Unit 1 Revision: Reaction Rates

1 Salts V2.0 Unit 11 (Pg 138).

8.3 Preparation of salts Demonstrate knowledge and understanding of preparation, separation and purification of salts as examples of some of the techniques.

Tests for Ions Sunday, 11 November 2018

Identifying Compounds

Standard pattern in writing experimental procedures

Writing Equations Saturday, 24 November 2018.

Electrolytic processes EDEXCEL TOPIC 3: CHEMICAL CHANGES 2 Acids

Inorganic Analysis Fish!.

Question: How do we know what ions are present in a solution?

PRACTICAL METHODS FOR MAKING SALTS: Learn THIS!

Title: Acids and bases Complete the activities listed below

PRACTICAL METHODS FOR MAKING SALTS: Learn THIS!

Presentation transcript:

salt soluble? yes, then choose an acid and a base base soluble? yestitrationno excess base no precipitation choose two soluble salts

salt solubility rules soluble insoluble all nitrates all chlorides except…. all sulphates except….. sodium and potassium carbonates all sodium, potassium and ammonium salts ….silver chloride, lead chloride ….barium sulphate, lead sulphate, calcium sulphate ….all other carbonates

titration add acid via burette to alkali`+ indicator until neutral (or until temperature stops rising) measure volume of acid added; throw away solution as it contains the indicator; add same volume of acid to same amount of alkali without indicator obtain dry salt from solution (see later slide) titration animation

excess base warm acid add excess base to acid until no more dissolves (warm acid if necessary) filter off excess base obtain salt from (see next slide) excess base animation

obtaining dry salt from solution Concentrate solution until it becomes saturated which is done by driving off most of the water by heating it. Solution is saturated when crystals form on a glass rod dipped in the solution. Stop heating and allow solution to cool and salt crystals to form. Filter the crystals to remove water Wash crystals with a little water Dry crystals with filter paper or place on warm gauze.

precipitation make 2 solutions each one containing 1 ion of the salt to be made (use soluble salts!!!) add the two solutions filter off the precipitate which is the insoluble salt wash the residue in the filter paper with distilled water dry with other filter paper or place on warm gauze

precipitation salts experiment copper sulfate (aq) lead nitrate (aq) potassium iodide (aq) silver nitrate (aq) sodium carbonate (aq) copper sulfate (aq) white pptebrown pptelight blue ppte blue ppte lead nitrate (aq) yellow ppte-white ppte potassium iodide (aq) yellow ppte- silver nitrate (aq) yellow ppte sodium carbonate (aq) Name the precipitates and write word and balanced equations

exercise For each of the salts below: o Decide on the method you will use o Select appropriate reagents Salts: 1.potassium chloride 2.copper nitrate 3.lead sulphate 4.magnesium chloride 5.ammonium nitrate 6.calcium sulphate