Question

ajutor

rezolvati va rog frumos
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Answer 1

Răspuns:

MHCl=1+35,5=36,5g/mol

MMg(OH)2=24+2x16+2x1=58g/mol

MMgCl2=24+2x35,5=95g/mol

2x36,5g....58g................95g

2HCl  +   Mg(OH)2   →   MgCl2 + H2O

73g...............xg....................yg

x=73x58/2x36,5=58gMg(OH)2

y=73x95/2x36,5=95gMgCl2

calculam in moli

n=m/M=73/36,5=2moli

2moli..........1mol..................1mol

2HCl  +   Mg(OH)2   →   MgCl2 + H2O

2moli...........xmoli...............ymoli

x=2x1/2=1mol Mg(OH)2

y=2x1/2=1mol MgCl2

Explicație: