Question

Cân bằng phương trình sau:

a, Zn + O\(_2\)-->ZnO

b, SO\(_2\) + O\(_2\)-->SO\(_3\)

c, Ca+H\(_2\)S0\(_4\)--->CaSO\(_4\)+H\(_2\)O

d, HCl+MnO\(_2\)--->MnCl\(_2\)+Cl\(_2\)+H\(_2\)O

e, Ba(OH)\(_2\)+HCl--->BaCl\(_2\)+H\(_2\)O

f, Fe+H\(_2\)PO\(_{4đ.n}\)--->Fe\(_2\)(SO\(_4\))\(_3\)+SO\(_2\)+H\(_2\)O

g, Fe\(_x\)O\(_y\)+CO--->Fe+CO\(_2\)

h, K\(_2\)O+H\(_3\)PO\(_4\)--->K\(_3\)PO\(_4\)+H\(_2\)O

i, C\(_x\)H\(_y\)+O\(_2\)--->CO\(_2\)+H\(_2\)O

k, FeS\(_2\)+O\(_2\)---> Fe\(_2\)O\(_3\)+SO\(_2\)

Answer 1

a> 2Zn+O2-->2ZnO ( tỉ lệ hệ số là 2:1:2)

b>2:1:2

d>4:1:1:1:2

e>1:2:1:2

f>2:6:1:3:6

k> 2:11/2:1:4

Answer 2

h> 3K2O+ 2H3PO4-->2K3PO4+ 3H2O

g> FexOy + yCO--->xFe+ yCO2

i>CxHy+ (x+y/2)o2--> x CO2+yH2O

Answer 3

câu c hình như phương trình viết sai

Answer 4

a, 2Zn + O₂ \(\rightarrow\) 2ZnO

b, 2SO₂ + O₂ \(\xrightarrow[^{V_2O_5}]{t^0}\) 2SO₃

c, Ca+H₂SO₄\(\rightarrow\) CaSO₄+H₂

d, 4HCl+MnO₂\(\rightarrow\) MnCl₂+Cl₂+2H₂O

e, Ba(OH)₂+2HCl\(\rightarrow\) BaCl₂+H₂O

g, Fe_xO_y+yCO\(\rightarrow\) xFe+yCO₂

h, 3K₂O+2H₃PO₄\(\rightarrow\) 2K₃PO₄+3H₂O

i, 2CxHy+\(\dfrac{2x+y}{2}\)O₂\(\rightarrow\) xCO₂+yH₂O

k, 4FeS₂+11O₂\(\rightarrow\) 2Fe2O3 + 8SO2