Question

COROANAA!!!! 270g de aluminiu reactioneaza cu o solutie de acid clorhidric de concentratie 36,5%.Det:
a) masa solutiei de acid clorhidric
b) nr de moli de gaz rezultat

Answer 1

2Al + 6HCl = 2AlCl3 + 3H2

a) MAl=27g/mol

MHCl=AH+ACl=1+35.5=36.5g/mol

2*27g Al ...........6*36.5g HCl
270g Al..............x=1095g HCl (md)

C=md/ms*100=>ms=md*100/C=109500/36.5= Calculează !!

b) 2*27g Al..................3*22,4 L H2
270g Al.......................x= Calculează!!!