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Wenger - AP Chemistry > M-3 Solutions > Flashcards

M-3 Solutions Flashcards

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1
Q

List the 6 strong acids

A

HCl, HBr, HI, HNO3, H2SO4, HClO4

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2
Q

Strong or weak acid?

HClO

A

Weak

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3
Q

Strong or weak acid?

HCl

A

strong

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4
Q

Strong or weak acid?

HClO4

A

strong

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5
Q

Strong or weak acid?

HNO2

A

weak

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6
Q

Strong or weak acid?

HNO3

A

strong

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7
Q

Strong or weak acid?

HBr

A

strong

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8
Q

Strong or weak acid?

HBrO3

A

weak

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9
Q

Strong or weak acid?

HI

A

strong

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10
Q

Strong or weak acid?

HIO2

A

weak

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11
Q

Strong or weak acid?

H2SO3

A

weak

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12
Q

Strong or weak acid?

H2SO4

A

strong

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13
Q

Strong or weak acid?

H2S

A

weak

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14
Q

Write out the dissociation in water equation for tjhe following electrolytes:

NaCl(s)

A

NaCl(s) → Na+(aq) + Cl-(aq)

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15
Q

Write out the dissociation in water equation for tjhe following electrolytes:

MgCl2(s)

A

MgCl2(s) → Mg2+(aq) + 2 Cl-(aq)

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16
Q

Write out the dissociation in water equation for tjhe following electrolytes:

NaNO3(s)

A

NaNO3(s) → Na+(aq) + NO3-(aq)

17
Q

Write out the dissociation in water equation for tjhe following electrolytes:

Mg(NO3)2(s)

A

Mg(NO3)2(s) → Mg2+(aq) + 2 NO3-(aq)

18
Q

Write out the dissociation in water equation for tjhe following electrolytes:

HCl(g)

A

HCl(g) → H+(aq) + Cl-(aq)

19
Q

Write out the dissociation in water equation for tjhe following electrolytes:

HF(g)

A

HF(g) → HF(aq)

HF is a weak acid so only a small portion of it will dissociate in water. The majority of the HF will dissolve into tje water but remain in molecular form.

20
Q

Write out the dissociation in water equation for tjhe following electrolytes:

HNO3(g)

A

HNO3(g) → H+(aq) + NO3-(aq)

21
Q

Write out the dissociation in water equation for tjhe following electrolytes:

HNO2(g)

A

HNO2(g) → HNO2(aq)

Nitrous acid is a weak acid so only a very small portion will dissociate in water. Most of the nitrous acid will remain in moelcular form but dissolved in the water.

22
Q

Write out the dissociation in water equation for tjhe following electrolytes:

C6H12O6(s)

A

C6H12O6(s) → C6H12O6(aq)

Glucose is a nonelectrolyte. While it does dissolve in water it does not dissociate at all.

23
Q

Place the following in increasing order of concentration of particles in solution. All solution are 1.0 M

CO(NH2)2, NaCl, HCl, CaCl2, HF

A

CO(NH2)2 < HF < NaCl = HCl < CaCl2

(non, weak, strong, strong, strong)

24
Q

Place the following in increasing order of conductivity. All solution are 0.10 M

C6H12O6, HNO3, NaBr, Na2SO4, HC2H3O2

A

C6H12O6 < HC2H3O2 < HNO3 = NaBr < Na2SO4

(non, weak, strong, strong, strong)

*polyatomic ions do not dissociate further

25
Q

Place the following in increasing order of conductivity.

5.0 M C6H12O6, 1.0 M HNO3, 1.5 M NaBr, 1.0 M Na2SO4, 1.0 M HC2H3O2

A

C6H12O6 < HC2H3O2 < HNO3 < NaBr = Na2SO4

(non, weak, strong, strong, strong)

*polyatomic ions do not dissociate further

26
Q

Place the following in increasing order of concentration of particles in solution. All solution are 1.0 M

5.0 M CO(NH2)2, 1.0 M NaCl, 1.0 M HCl, 1.5 M CaCl2, 1.0 M HF

A

HF < HCl = NaCl < CaCl2 < CO(NH2)2

(slightly > 1.0 M, 2.0 M, 2.0M, 4.5 M, and 5.0 M)

27
Q

I pull 1.0 L of a 5.0 M sodium chloride solution off of the shelf. How many moles of sodium chloride can be found in the solution?

Note: Sodium chloride has a molar mass of 57g/mol.

A

5.0 moles

28
Q

I pull 1.0 L of a 2.0 M sodium chloride solution off of the shelf. How many grams of sodium chloride were used to make this solution?

Note: Sodium chloride has a molar mass of 57g/mol.

A

2.0 moles = 114 grams

29
Q

I pull 1.0 L of a 2.0 M sodium chloride solution off of the shelf. How many moles of sodium chloride can be found in 0.50 L of this solution?

Note: Sodium chloride has a molar mass of 57g/mol.

A

1.0 moles

30
Q

I pull 1.0 L of a 2.0 M sodium chloride solution off of the shelf. How many grams of sodium chloride were needed to make 0.50 L of this solution?

Note: Sodium chloride has a molar mass of 57g/mol.

A

1.0 mole = 57 g of NaCl

31
Q

What volume of 2.0 M sodium chloride can I make from 28.5 g of salt?

Note: Sodium chloride has a molar mass of 57g/mol.

A

28.5 g = 0.5 moles of NaCl so I can make 0.25L of 2.0 M solution. (0.50mol/.250L = 2.0 M)

32
Q

What volume of 2.0 M sodium chloride can I make from 228 g of salt?

Note: Sodium chloride has a molar mass of 57g/mol.

A

228 g = 4.0 moles of NaCl so I can make 2.0 L of 2.0 M solution. (4.0mol/2.0L = 2.0 M)

33
Q

I pull 1.0 L of a 2.0 M sodium chloride solution off of the shelf. What is the concentration of the solution if I add another 1.0 L of water?

Note: Sodium chloride has a molar mass of 57g/mol.

A

2.0 moles in the solution, now it has a volume of 2.0 L so new concentration is 1.0 M (2.0 mol/2.0 L)

34
Q

I pull 1.0 L of a 2.0 M sodium chloride solution off of the shelf. What is the concentration of the solution if I evaporate away half of the water?

Note: Sodium chloride has a molar mass of 57g/mol.

A

2.0 moles in the solution, now it has a volume of 0.50 L so new concentration is 4.0 M (2.0 mol/0.50 L)

35
Q

Which solution contains more moles of sodium chloride?

Solution A: 0.50 L of 4.0 M NaCl

Solution B: 2.0 L of 1.0 M NaCl

Note: Sodium chloride has a molar mass of 57g/mol.

A

Each solution contains 2.0 moles of NaCl

36
Q

If I remove a 100 mL sample of solution A and a 100 mL sample of solution B, which sample contains more moles of sodium chloride?

Solution A: 0.50 L of 4.0 M NaCl

Solution B: 2.0 L of 1.0 M NaCl

Note: Sodium chloride has a molar mass of 57g/mol.

A

Solution A has 4 times the concentration of solution B so any volume of solution A will have 4 times the number of moles of NaCl as an equivalent volume of solution B

37
Q

Which solution will require a greater volume to provide 0.50 moles of NaCl for a reaction?

Solution A: 0.50 L of 4.0 M NaCl

Solution B: 2.0 L of 1.0 M NaCl

Note: Sodium chloride has a molar mass of 57g/mol.

A

Solution B is 4 times less concentrated than Solution A so it takes 4 times the volume to deliver an equivalent number of moles of NaCl as solution A.

38
Q

How much water should I add to 0.50 L of 2.0 M NaCl in order to create a 1.0 M NaCl solution?

Note: Sodium chloride has a molar mass of 57g/mol.

A

I order to cut the concentration in half, I need to double the volume. I need to add 0.50 L of water

Wenger - AP Chemistry (27 decks)

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