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Chemistry 20 > Solution Chemistry > Flashcards

Solution Chemistry Flashcards

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1
Q

What is concentration?

A

How much solute is in a solvent (ratio of solute to solvent)

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2
Q

Percent by Mass

What is percent by mass(%m/m)?

A

g solute in 100g solution.

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3
Q

Percent by Mass

What is the formula to percent by mass (%m/m)?

A

%by mass solute=
mass of solute(g)
÷ x100%
mass of solution(g)

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4
Q

Percent by Volume

What is percent by volume (%v/v)?

A

Liquid in liquid.

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5
Q

Percent by Volume

What is the formula for (%v/v)?

A

%by volume of solute=
volume of solute(ml)
÷ x100%
volume of solution(ml)

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6
Q

What is percent mass by volume(%m/v)?

A

Usually #g of solute per 100mL solution.

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7
Q

What is the formula for (%m/v)?

A

%mass/volume=
mass of solute(g)
÷ x100%
volume of solution(g)

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8
Q

What is the use of parts per million(ppm)?

A

For small quantities.

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9
Q

What is the formula for parts per million (ppm)?

A

ppm=
mass of solute(g)
÷ x10^6
mass of solution(g)

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10
Q

What is the use of parts per billion(ppb)?

A

For smaller quantities

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11
Q

What is the formula to parts per billion(ppb)?

A

ppb=
mass of solute(g)
÷ x10^9
mass of solution(g)

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12
Q

cows milk contains 4.0 g of lactose per 100m of milk. what mass of lactose is present in one 250ml of milk

A

11.3g

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13
Q

a 10% M/V salt solution is used fr making pickles. what mass of salt is present in 750ml of this solution

A

g=75g

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14
Q

to make a hand cleaner, a technician mixes 30ml of antiseptic with enough liquid soap to make 70ml of solution. determine the present by volume concentration of the antiseptic in the hand cleaner.

A

43% V/V

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15
Q

a solution of rubbing alcohol is labelled 60.0%(v/v). determine the volume of rubbing alcohol present in a 200ml sample of solution

A

120ml

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16
Q

a bottle of insect repellent states that it has a DEFT. present by volume concentration of 25%. if you just bought a 250ml container of this product, what volume of DEFT have you purchased

A

62.5ml

17
Q

what is the formula to percent by volume

A

% volume of solute=volume of solute (ml) / volume of solute(ml) x 100%

18
Q

a solution of 15.0g of sugar dissolved in 70.0g of solution. what is the present by mass concentration of sugar in the solution

A

21.4%

Chemistry 20 (27 decks)

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