Question

Care este concentratia procentuala a unei solutii de acid sulfuric de concentratie 3M si cu densitatea de 1.18 g/cm3
R:24.91%

Answer 1

Cm = md/miuxVs

=> md = CmxVsxmiu

c% = mdx100/ms

=> md = msxc%/100

md = md

CmxVsxmiu = msxc%/100

ro = ms/Vsx1000

=> Vs = ms/ro

=> 100xCmxmsxmiu = rox1000xmsxc%

=> Cmxmiu = rox10xc%

=> c% = Cmxmiu/rox10

= 3x98/1,18x10 = 24,91%