Question

Q2 Write the skeleton equation for each of the following reactions. Then
balance each of the following chemical equations.
1. Hydrogen + oxygen
water
2. Iron (III) oxide + hydrogen
water + iron
3. Sodium + water
sodium hydroxide + hydrogen
4. Copper + Oxygen
-Copper (11) Oxide
5. Potassium iodide + chlorine
potassium chloride + iodine
6. Chromium + tin(IV) chloride
chromium(III) chloride + tin
7. Magnesium + copper (II) sulphate
magnesium sulphate + copper
zinc chloride + strontium
8. Zinc sulphate + strontium chloride
sulphate
ammonium nitrate +
9. Ammonium chloride + lead (III) nitrate
lead (III) chloride
iron(III) sulphide +
10. iron(III) nitrate + magnesium sulphide
magnesium nitrate​

Answer 1

Answer:

1. 2H2 + O2 = 2 H2O

Explanation:

hydrogen burns in oxygen to form water

Answer 2

Answer:

1. 2H2 +O2 -------> 2H2O
2. Fe2O3 + 3H2------> 2Fe + 3H2O
3. 2Na+2H2O→2NaOH+H2
4. Cu + O -> CuO
5. 2KI(aq) + Cl2(g) --> 2KCl(aq) + I2(aq)
6. Cr + SnCl4 = Sn + CrCl3
7. Mg(s) + CuSO 4(aq) → MgSO 4(aq) + Cu (s)
8. ZnSO4 + SrCl2 = SrSO4ZnCl2
9. NH4Cl + Pb(NO3)2 = PbCl2 + NH4NO3
10. Fe(NO3)3 + MgS = Fe2S3 + Mg(NO3)2