Do 190g roztworu soli o stężeniu 5% dosypano 10g soli. Oblicz stężenie otrzymanego roztworu.
dane
cp1 = 5%
mr1 = 190g
mr2 = 190g + 10g = 200g
szukane
ms1 = ?
ms2 = ?
cp2 = ?
ms1 = cp1 * mr1 / 100%
ms1 = 5% * 190g / 100%
ms1 = 9.5g
ms2 = 9,5g + 10g = 19,5g
cp2 = 100% * ms2 / mr2
cp2 = 100% * 19,5g / 200g
cp2 = 9,75%
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dane
cp1 = 5%
mr1 = 190g
mr2 = 190g + 10g = 200g
szukane
ms1 = ?
ms2 = ?
cp2 = ?
ms1 = cp1 * mr1 / 100%
ms1 = 5% * 190g / 100%
ms1 = 9.5g
ms2 = 9,5g + 10g = 19,5g
cp2 = 100% * ms2 / mr2
cp2 = 100% * 19,5g / 200g
cp2 = 9,75%