Question

Ce masa (g) de MgCl 2 reactioneaza cu 600 g solutie de azotat de
argint de concentratie 20% .
AgNO 3 + MgCl 2 = Mg(NO 3 ) 2 + AgCl

Ma puteti ajuta, va rog?

Answer 1

Răspuns:

ms=600g

C=20%

md=?

mdC×ms/100=20×600/100=120g AgNO3

MAgNO3 =108×14+3×16=170g/mol

MMnCl2=55+2×35,5=126g/moli

170g 126g

AgNO 3 + MgCl 2 = Mg(NO 3 ) 2 + AgCl

120g xg

x=120×126/170=88,94g MnCl2