Practice Exercises on Stoichiometry 2 with Detailed Answers; A Revision Guide.

PRACTICE EXERCISES

on
STOICHIOMETRY
2
CHEMICAL EQUATIONS
and
REACTION STOICHIOMETRY



By
Temple C. Eke

, A. General Stoichiometric Calculations

1. Calcium hydrogen trioxocarbonate (IV) decomposes on heating
according to the equation:
.
Calculate the mass of that must be heated to produce
.



2. Zinc dissolves in Hydrochloric acid according to the equation:
.
If of Zinc reacts with excess , calculate:
(a) the number of moles of hydrogen produced.
(b) the mas of zinc chloride produced.



3. Calculate the volume of Hydrogen, measured at STP that would be
liberated at STP when reacts with Zinc metal.
[molar volume at STP = ]


4. Calculate the volume of solution of tetraoxosulphate (VI)
acid needed to dissolve of Sodiumtrioxocarbonate (IV) decahydrate
crystals .



5. completely reacted with
according to the equation:
.
Calculate:
(a) the molar concentration of .
(b) the mass of produced.



The Limiting Reactant Concept

6. Calculate the Volume of Hydrogen at STP liberated when of Zinc dust
reacts with .