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General chemistry > CH.4- Solutions/Chem rx > Flashcards

CH.4- Solutions/Chem rx Flashcards

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1
Q

Na+
Soluble or insoluble?

A

Soluble

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2
Q

K+
Soluble or insoluble?

A

Soluble

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3
Q

Li+ is soluble. T or F

A

True

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4
Q

Which ions are always soluble no matter what?

A
  • 1A group (1st column)
  • NH₄ (ammonium)
  • NO₃- (nitrates)
  • C₂H₃O₂- (acetate)
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5
Q

Is Cl- soluble? Exceptions?

A

Usually soluble
Except: Ag+, Pb²⁺, Hg₂²⁺

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6
Q

Is I- soluble? Exceptions?

A

Usually soluble
Except: Ag+, Pb²⁺, Hg₂²⁺

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7
Q

Is Br- soluble? Exceptions?

A

Usually soluble
Except: Ag+, Pb²⁺, Hg₂²⁺

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8
Q

Is SO₄²⁻ soluble? Exceptions?

A

Usually soluble
Except: Ag+, Pb²⁺, Hg₂²⁺ AND
Ca²⁺, Ba²⁺, Sr²⁺

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9
Q

Is OH- soluble? Exceptions?

A

Insoluble
Except: Na+, NH₄, K+ AND Ca²⁺, Ba²⁺, Sr²⁺

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10
Q

Is S²⁻ soluble? Exceptions?

A

Insoluble
Except: 1A group (1st column) + NH₄

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11
Q

Is CO₃²⁻ soluble? Exceptions?

A

Insoluble
Except: 1A group (1st column) + NH₄

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12
Q

Is PO₄³⁻ soluble? Exceptions?

A

Insoluble
Except: 1A group (1st column) + NH₄

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13
Q

Is CrO₄²⁻ soluble? Exceptions?

A

Insoluble
Except: 1A group (1st column) + NH₄

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14
Q

Soluble or insoluble: AgCl

A

Insoluble

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15
Q

Soluble or insoluble: Hg₂Cl₂

A

Insoluble

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16
Q

Soluble or insoluble: PbCl

A

Insoluble

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17
Q

Soluble or insoluble: AgBr

A

Insoluble

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18
Q

Soluble or insoluble: Hg₂Br₂

A

Insoluble

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19
Q

Soluble or insoluble: HgBr₂

A

Insoluble

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20
Q

Soluble or insoluble: PbBr₂

A

Insoluble

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21
Q

Soluble or insoluble: AgI

A

Insoluble

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22
Q

Soluble or insoluble: Hg₂I₂

A

Insoluble

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23
Q

Soluble or insoluble: HgI₂

A

Insoluble

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24
Q

Soluble or insoluble: PbI₂

A

Insoluble

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25
Q

Soluble or insoluble: CaSO₄

A

Insoluble

26
Q

Soluble or insoluble: SrSO₄

A

Insoluble

27
Q

Soluble or insoluble: BaSO₄

A

Insoluble

28
Q

Soluble or insoluble: AgSO₄

A

Insoluble

29
Q

Soluble or insoluble: Hg₂SO₄

A

Insoluble

30
Q

Soluble or insoluble: PbSO₄

A

Insoluble

31
Q

Soluble or insoluble: (NH₄)₂SO₄

A

Soluble

32
Q

Soluble or insoluble: (NH₄)₃PO₄

A

Soluble

33
Q

Soluble or insoluble: (NH₄)₂S

A

Soluble

34
Q

Soluble or insoluble: Ca(OH)₂

A

Soluble

35
Q

Soluble or insoluble: Sr(OH)₂

A

Soluble

36
Q

Soluble or insoluble: Ba(OH)₂

A

Soluble

37
Q

What are the 6 strong acids?

A

1) HNO₃
2) H₂SO₄
3) HClO₄
4) HCl
5) HBr
6) HI

38
Q

If an acid isn’t strong, it is automatically___

A

Weak

39
Q

What are the 6 strong bases? Which group on the periodic table?

A

1) LiOH
2) NaOH
3) KOH
4) Ca(OH)₂
5) Sr(OH)₂
6) Ba(OH)₂

Alkali metal hydroxides
Alkaline earth hydroxides

40
Q

Strong acids and/or bases do what in water?

A

Ionizes completely

41
Q

If an acid/base is strong, electrolyte is __

A

Strong

42
Q

If an acid/base is weak, electrolyte is __

A

Weak

43
Q

Weak bases are usually which base?

A

Nitrogen bases

44
Q

Which 3 ions produce gas? What’s the product?

A

1) Sulfides (S)
2) Sulfites (SO₂)
3) Carbonates (CO₃²⁻)

They form:
Hydrogen sulfide (H₂S (g))
Sulfur trioxide H₂O (l) + SO₂(g)
Carbon dioxide H₂O (l) + SO₂ (g)

45
Q

What is oxidation? Is it reducing agent or oxidizing agent?

A

Increase in oxidation state (loss e-) - Reducing agent

46
Q

What is reduction? Is it reducing agent or oxidizing agent?

A

Decrease in oxidation state (gain e-) - Oxidizing agent

47
Q

Oxidized = Reducing or oxidizing agent? Why?

A

Reducing because of loss e-

48
Q

Reduced = Reducing or oxidizing agent? Why?

A

Oxidizing because of gain e-

49
Q

Oxidation number of an atom of an element =

A

0

50
Q

Oxidation number of monatomic ions =

A

Charge of ion

51
Q

Oxidation number of oxygen =

A

-2 (mostly)
Except in H₂O₂ ==> Oxidation #= -1

52
Q

Oxidation number of hydrogen =

A

+1 (mostly)
Except in binary compounds w/ metal ==> Oxidation # = -1

53
Q

Oxidation number of halogens (fluorine)

A

-1

54
Q

Oxidation number of compounds =

A

Sum of all oxidation #s = 0

55
Q

Oxidation number of polyatomic ions =

A

Charge of ion

56
Q

Oxidation number of K =

A

1

57
Q

Oxidation number of O₇²⁻ =

A

-2

58
Q

Oxidation - increase or decrease oxidation #

A

increase

59
Q

Reduction - increase or decrease oxidation #

A

decrease

60
Q

Oxidizing agent itself is ___

A

Reduced

61
Q

Reducing agent itself is ____

A

oxidized

General chemistry (3 decks)

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