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Chemsitry > Unit 2 Section 2- Group 7 and 2 > Flashcards

Unit 2 Section 2- Group 7 and 2 Flashcards

1
Q

What are the results of a test with Sulphuric acid and Chlorine?

A

Misty white fumes, White solid

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2
Q

What are the results of a test with Sulphuric acid and Bromine?

A

Misty white fumes, Red/Brown solid

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3
Q

What are the results of a test with Sulphuric acid and Iodine?

A

Misty white fumes, Black solid, bad egg smell

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4
Q

What are the results of a test with Silver nitrate and Chlorine?

A

White precipitate, only soluble in dilute NH3

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5
Q

What are the results of a test with Silver nitrate and Bromine?

A

Cream precipitate, only soluble in Concentrated NH3

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6
Q

What are the results of a test with Silver nitrate and Iodine?

A

Yellow precipitate, not soluble in NH3

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7
Q

What are the results of a test with a Hydroxide and Magnesium?

A

White precipitate, sparingly soluble

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8
Q

What are the results of a test with a Hydroxide and Calcium?

A

White precipitate, slightly soluble

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9
Q

What are the results of a test with a Hydroxide and Strontium?

A

White precipitate

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10
Q

What are the results of a test with a Hydroxide and Barium?

A

No change

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11
Q

What are the results of a test with a Sulfate and Magnesium?

A

Colourless

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12
Q

What are the results of a test with a Sulfate and Calcium?

A

Colourless

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13
Q

What are the results of a test with a Sulfate and Strontium?

A

White precipitate

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14
Q

What are the results of a test with a Sulfate and Barium?

A

Dense white precipitate

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15
Q

What are the results of Chlorine displacement reactions?

A

Chloride- No change
Bromide- Orange
Iodide- Brown

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16
Q

What are the results of Bromine displacement reactions?

A

Only displaces Iodine- Light brown

17
Q

What are the results of Iodine displacement reactions?

A

Does not displace any

18
Q

What is the equation of water and Chlorine?

A

Cl2 + H2O —> HCl + HClO
<—

19
Q

What is the equation of what and Chlorine in sunlight?

A

2Cl2 + H2O —> 4HCl + O2

20
Q

What is the equation of making Bleach?

A

2NaOH + Cl2 —> NaCl + NaClO + H2O

21
Q

What is the trend of Oxidising ability of group 7?

A

It decreases down the group due to more shielding and weak electrostatic attraction from the nucleus

22
Q

What is the trend of Reducing ability in group 7?

A

It increases down the group due to more shielding so there will be weaker electrostatic attraction from the nucleus

23
Q

What are the uses of group 2

A

Magnesium- Titanium extraction
Magnesium hydroxide- Indigestion remedy
Barium Sulfate- Allows intestines to be x-rayed

Chemsitry (10 decks)

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