Interpret the equations in terms of particles moles and mass
a. 2PbS +3O2 = 2PbO +2SO2
b. 4HCl +O2 = 2H2O + 2Cl2

The equations in terms of particles moles and mass

a. 2PbS +3O2 = 2PbO +2SO2

b. 4HCl +O2 = 2H2O + 2Cl2

a) 2 Molecules of Pbs + 3 molecules of O2 = 2 Molecules of PbO + 2 molecules of SO2

2 Moles of PbS + 3 Moles of O2 = 2 moles of PbO + 2 Moles of SO2

478.6 grams of PbS+ 48 grams of 02 = 446.4 grams +  128 grams SO2

b). 4 molecules of HCl + 1 molecule of oxygen = 2 molecules of water +2 molecules pf Cl2

4 mole of HCl + 1 mole of oxygen = 2 mole of water + 2 moles of Cl2

146.4 grams of HCl + 31.8 grams = 36 grams of H20 + 159.8 grams of Cl2.

Explanation:

Calculation of:

particles =?

moles =?

mass =?

Equation given:

a) 2PbS +3O2 = 2PbO +2SO2

2 Molecules of Pbs + 3 molecules of O2 = 2 Molecules of PbO + 2 molecules of SO2

2 Moles of PbS + 3 Moles of O2 = 2 moles of PbO + 2 Moles of SO2

Mass of the reactant and product is calculated as:

number of moles x atomic mass

so,

atomic mass of PbS =239.3 grams/mole

mass = 2 x 239.3

          = 478.6 grams

atomic mass of O2 = 16 grams/mole

mass = 3 x 16

         = 48 grams

atomic mass of PbO = 223.2 grams/mole

mass = 2 x 223.2

         = 446.4 grams

atomic mass of SO2 = 64 grams/mole

mass = 2 x 64

          = 128 grams

b)  Calculation of:

particles =?

moles =?

mass =?

Equation given:

4HCl +O2 = 2H2O + 2Cl2

4 molecules of HCl + 1 molecule of oxygen = 2 molecules of water +2 molecules pf Cl2

4 mole of HCl + 1 mole of oxygen = 2 mole of water + 2 moles of Cl2

To calculate mass, formula used is

mass = number of moles x atomic mass

atomic mass of HCl =36.46 gram/mole

mass = 4 x 36.46 = 146.4 grams

atomic mass of oxygen

mass = 2x 15.9 = 31.8 grams

atomic mass of water = 18 grams,mole

mass = 2 x 18 = 36 grams

atomic mass of Cl2 = 79.90 grams/mole

mass = 2 x 79.90 = 159.8 grams

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.