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29 Cards in this Set
- Front
- Back
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Mg + Steam |
MgO + H2 White Solid |
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Mg + Cold Water |
Mg(OH)2 |
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Group 2 + Water what is: a. oxidising agent? b. reducing agent? |
a.Hydrogen(Water) is Oxidising Agent b.Group 2 is Reducing Agent |
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Magnesium Hydroxide is the ................ soluble hydroxide |
Least |
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Describe the trend in solubility of hydroxides in water as you go down Group 2? |
Increases down the group |
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How does the pH of Group 2 Hydroxides change down the group? |
Increases down the group |
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How do you test the solubility of Group 2 Hydroxides? |
Add Aqueous Sodium Hydroxide. |
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Use of Magnesium Hydroxide in Medicine. |
Indigestion Medicine - Neutralizes stomach acid |
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Use of Calcium Hydroxide in Agriculture |
Ca(OH)2 is Slacked Lime - Neutralizes acidic soil |
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Describe the trend in the solubility of Group 2 Sulfates. |
Decreases down the group. |
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How do you test for Solubility of Group 2 Sulfates? |
Add Sulfuric Acid ( or Aqueous Sodium Sulfate) to solutions of Group 2 Ions. Magnesium Sulfate - soluble. Barium Sulfate - insoluble |
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Half Equation of Barium Salt Test for sulfates. |
Ba (2+) + SO4 (2-) ---> BaSO4 |
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What is used to remove sulfur dioxide from flue gas (pollutant from power stations)? |
Calcium Oxide (CaO) Calcium Carbonate (CaCO3) |
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Colour of Halogens |
Chlorine : Pale Green Bromine: Red/Brown Iodine: Grey |
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State of Halogens at Room Temperature |
Chlorine: Gas Bromine: Liquid Iodine: Solid |
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Colour of Halogens in aqueous solution |
Chlorine: Pale Green Bromine: Orange Iodine: Brown |
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Colour of Halogens in Cyclohexane |
Chlorine: Pale Green Bromine: Orange Iodine: Purple` |
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Are Halogens more soluble in non-polar solvents or in water? |
Non-polar solvents, since they are also non-polar. |
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Chlorine + Bromine Ions ------> |
Bromine + Chloride Ions |
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In redox reactions of Halogens, the most reactive Halogen always... |
Keeps/Takes the electrons. |
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Chloride Ions + Iodine ---> |
Chloride Ions + Iodine (nothing happens) |
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Are Halogens oxidising or reducing agents? |
Oxidising Agents |
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Describe the trend in halogens ability to act as oxidising agents going down Group 7. |
Decreases down the group. |
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How do you test for: a.Sulfuric Acid b.Sulfur Dioxide c.Sulfur d.Hydrogen Sulfide |
a.Universal Indicator Turns Red b.Acidified Dichromate Paper turns from green to orange c.Is a Yellow Solid d.Lead Nitrate Paper turns Black |
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If Sulfuric Acid is reduced by a Halide Ion what happens to the Halide Ion. |
The Halide ion is oxidized into the Halogen Molecule. |
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Sulfuric Acid cannot be reduced by a .......... ion. |
Chloride |
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The strongest Group 7 Oxidizing agent is .............. |
Fluorine |
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The strongest Group 7 Reducing agent is .............. |
Iodide |
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Chlorine + Water ----> |
HCl + HClO |
