Mešanje,rečenje in koncentriranje raztopine Flashcards

1
Q

m1 + m2

A

=m3

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2
Q

V1 + V2

A

=/ V3,razen če sta dve enaki raztopini

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3
Q

(mešanje)

c1 x V1 + c2 x V2 =

A

c3 x V3

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4
Q

Kaj je c?

A

množinska koncentracija

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5
Q

(mešanje)

m1 x w2 + m2 x w2 =

A

m3 x w3

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6
Q

Kaj je w?

A

masni delež

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7
Q

(rečenje)

m1 x w1 + m(H2O) =

A

m2 x w2

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8
Q

(koncentriranje)

m1 x w1 - m(H2O) =

A

m2 x w2

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9
Q

Zračunaj mešanje in rečenje in koncentriranje:
m1=250g
w1=0,33
m(H2O)=120g

A
rečenje
m2 = 250g + 120g = 370g
w2 = m1 x V1 / m2 = 250g x 0,33 / 370g =
koncentriranje
m2 = 250g - 120g = 130g
w2 = m1 x V1 / m2 = 250g x 0,33/130g = 0,63
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