Question

Zmieszano
a.300g o stezeniu 10%
b.200g o stezeniu 20%
Oblicz stezenie procentowe otrzymanego roztworu.

Answer 1

Ms = 10%*300g+20%*200g = 0,1*300g+0,2*200g = 30g+40g = 70g
mr = 300g+200g = 500g

Cp = 70g/500g*100% = 7/50*100% = (700/50)% = 14%

Answer 2

Mr₁ = 300g
Cp₁ = 10%
ms₁ = ?
ms₁ = ( Cp * mr) :100%
ms₁= (10 * 300) :100
ms₁ = 30g

mr₂ = 200g
Cp = 20%
Ms₂ = (Cp * mr):100
ms₂ = (20 * 200) : 100
ms₂ = 4000:100
ms₂ = 40g

Mrc = mr₁ + mr₂
mrc = 300 + 200
mrc = 500

msc = ms₁ + ms₂
msc = 30 + 40
msc = 70

Cpc = (ms * 100) : mr
Cpc = ( 70 * 100) : 500
cpc = 7000: 500
cpc = 14%

Stężenie procentowe tego roztworu wynosi 14%

Answer 3

Ms = 10%*300g+20%*200g =
0,1*300g+0,2*200g = 30g+40g = 70g

mr = 300g+200g = 500g

Cp = 70g/500g*100% =
7/50*100% = (700/50)% =
14%

Cp-stężenie procentowe
*-mnożenie