Question

108g dea aluminiu reactioneaza cu clor . Calculati in g si in moli cantitatea de clorura de aluminiu rezultata din reactie

Answer 1

-CALCULEZ MOLI Al,   stiind M,Al= 27g/mol

niu=m/M= 108g/27g/mol= 4mol

-calculez moli AlCl3 din ecuatia chimica

2mol.....................2mol        

2Al + 3Cl2---> 2AlCl3

4mol....................x=4mol AlCl3---->

m=niuxM=4molX(27gAl+3X35,5gCl)/mol=..........calculeaza !!!!