Cân bằng phương trình hóa học!

[mary_britgit]

a) KMnO[SUB]4[/SUB] + HCl --> KCl + MnCl[SUB]2[/SUB] + Cl[SUB]2[/SUB] + H[SUB]2[/SUB]O
b) Na[SUB]2[/SUB]CO[SUB]3[/SUB] + CaCl[SUB]2[/SUB]--> CaCO[SUB]3[/SUB]+ NaCl
c) KMnO[SUB]4[/SUB] --> K[SUB]2[/SUB]MnO[SUB]4[/SUB] + MnO[SUB]2[/SUB] + O[SUB]2[/SUB]
d) Ca(OH)[SUB]2[/SUB] + HNO[SUB]3[/SUB] --> Ca(NO[SUB]3[/SUB])[SUB]2[/SUB] + H[SUB]2[/SUB]O
e) KMnO[SUB]4[/SUB] + HCl --> KCl + MnCl[SUB]2[/SUB] + Cl[SUB]2[/SUB] + H[SUB]2[/SUB]O
f) Cu(NO[SUB]3[/SUB])[SUB]2[/SUB] --> CuO + NO[SUB]2[/SUB] + O[SUB]2[/SUB]​

 

[Hân Nhi]

a) KMnO[SUB]4[/SUB] + HCl --> KCl + MnCl[SUB]2[/SUB] + Cl[SUB]2[/SUB] + H[SUB]2[/SUB]O
b) Na[SUB]2[/SUB]CO[SUB]3[/SUB] + CaCl[SUB]2[/SUB]--> CaCO[SUB]3[/SUB]+ NaCl
c) KMnO[SUB]4[/SUB] --> K[SUB]2[/SUB]MnO[SUB]4[/SUB] + MnO[SUB]2[/SUB] + O[SUB]2[/SUB]
d) Ca(OH)[SUB]2[/SUB] + HNO[SUB]3[/SUB] --> Ca(NO[SUB]3[/SUB])[SUB]2[/SUB] + H[SUB]2[/SUB]O
e) KMnO[SUB]4[/SUB] + HCl --> KCl + MnCl[SUB]2[/SUB] + Cl[SUB]2[/SUB] + H[SUB]2[/SUB]O
f) Cu(NO[SUB]3[/SUB])[SUB]2[/SUB] --> CuO + NO[SUB]2[/SUB] + O[SUB]2[/SUB]​

Hệ số cân phương trình ứng với vị trí các chất trên của bạn nha:
a. 2-16-2-2-5-8
b.1-1-1-2
c.2-1-1-1
d.1-2-1-2
e.jống cái a
f. 1-1-2-1/2