hydrogen and water. ////////////// objective 2.26 describe the reaction of dilute hcl and h 2 so 4...
TRANSCRIPT
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Section 2e
Hydrogen and water
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Acids And Metals
2.26 Predict the products of reactions between dil. Hydrochloric and Sulfuric Acids;
and metals like Mg ,Zn , Al and Fe
Objectives
1 Describe the safety precautions necessary for the reaction of an acid with a metal
2 Know how to test for the gas released from the reaction of an acid with a metal
3 Predict the products of dil. Hydrochloric and Sulfuric Acids with various metals
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Acids And Metals
2.26 Predict the products of reactions between dil. Hydrochloric and Sulfuric Acids;
and metals like Mg ,Zn , Al and Fe
SAFETY//////////////
Task 1 (Starter)
Fill in the hazards and precautions you should take when carrying out the reaction between an acid and a metal
SeeWorksheetFor help!
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Apparatus
2.26 Predict the products of reactions between dil. Hydrochloric and Sulfuric Acids;
and metals like Mg ,Zn , Al and Fe
Pipette
BunsenBurner
MagnesiumStrips
Also :
A LitSplint
HydrochloricAcid
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Observations
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
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Observations
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
Hydrogen
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Observations(Magnesium + Hydrochloric Acid)
What Did You See?
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
Metal Reaction With Acid
Test With Lit Splint
Gas Produced
Magnesium Bubbles of gas
released
‘Squeaky’ POP!
Hydrogen
Task 3
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Objective 2.26Describe the reaction of dilute HCl and H2SO4
with
Mg
Al
Zn Fe
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Experiment
Take a few pieces of the metal in the test tube
Add 5 ml of HCl to itCover the test tube with a rubber bungTest the gas with a lighted splintWrite down the observations in your copy
book.
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Reactions
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
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Naming Products
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
+ HydrogenSaltMetal + Acid
M + A S + H
Magnesium + Hydrochloric Acid
Magnesium Chloride + Hydrogen
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Naming Other Salts
2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
The 1st Part Of The Name Is From The Metal
The 2nd Part Of The NameIs From The Acid
LithiumHydrochloric Acid = Chloride
Salts
Sodium Sulfuric Acid = Sulfate Salts
Magnesium
The salts formed are : Metal Salts
Magnesium + Hydrochloric Acid
Task 4 Now try the examples on your worksheet
Magnesium Chloride
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2.26 Predict the products of reactions between dil. Hydrochloric, Nitric and Sulfuric Acids;
and metals, metal oxides and metal carbonates. (Except Nitric Acid and Metals)
Check Your KnowledgeTask 4 (Plenary)
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Combustion of hydrogenWord equationHydrogen + oxygen water
Chemical equationH2 + O2 H2O
Where do you think this reaction is used?
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Chemical test for waterAnhydrous CuSO4 +H2O CuSO4.5H2O colourless blue
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Physical test for waterMelting pointBoling point Freezing pointdensity