Jawabanmu

2014-05-29T13:03:03+07:00
KClO3 + 6HCl ⇒ KCl + 3H2O + 3Cl2 

mol Cl2 = 142/71 = 2 mol
mol KClO3 = (1/3)x(2) = 0,6 mol

mol = gr/Mr
gr = mol x Mr = 0,6 x 122,5 = 73,5 gram
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2014-05-29T13:07:02+07:00
KClO3 + 6HCl -> KCl + 3H2O + 3Cl2 
* perbandingan = 1 : 6 : 1 : 3 : 3

diketahui massa Cl2 = 142 g

* n Cl2 = 
 \frac{142}{71} = 2 mol
* n KClO3 =  \frac{1}{3} x 2 = 0,6 mol
* massa KClO3
n x Mr
Mr = 39 + 35,5 + (16x3) = 122,5
0,6 x 122,5 = 73,5 g

semoga bs membantu
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