 # Chemical Equation Lab Report

Good Essays
The chemical equation provides a variety of quantitative information for the calculations of combining weights of materials involved in a chemical process. The coefficients of a balanced equation tell us the relative formula units of reactants and products participating in a reaction. For instance:

C_8 H_18+12½O_2→8〖CO〗_2+9H_2 O … (3.7)

Note:
(i) A balanced equation remains valid if each of the coefficients in Eq. (3.7) is multiplied by the same number.
(ii) The basis selected for calculations is mass rather than moles.
(a) If mass is given, the given mass is converted to moles using molecular weight.
(b) Then using appropriate stoichiometric ratio, obtain required moles of products and reactants.
(c) Change moles of
Calculate the following items: (a) The percentage of excess carbon furnished, based on the principal reaction. (b) The percentage conversion of Fe2O3 to Fe. (c) The pounds of carbon used up and the pounds of CO produced per ton of Fe2O3 charged. (d) What is the selectivity in this process (of Fe with respect to FeO)?
Solution
Setting up the mole equivalent for the principal reaction as follows; Fe_2 O_3 + 3C → 2Fe + 3CO
Initial mass: 1 100 lb 300 lb - -
Mass at time, t: - - 600 lb
Molar mass: 160 12 56
Number of moles: 6.875 25.00 10.714
Mole equivalent: 6.875 8.333 5.357 In addition, setting up the mole equivalent for the undesired side reaction as follows; Fe_2 O_3 + C → 2FeO + CO
Initial mass: 1 100 lb 300 lb - -
Mass at time, t: - - 91.5 lb
Molar mass: 160 12 72
Number of moles: 6.875 25.00