Quantitative Chemistry

Answer 1

6.02x10^23

Question 2

explain the effect of a limiting quantity of a reactant on the amount of products it is possible to obtain in terms of amounts in moles or masses in grams.

Question 3

explain how the mass of a solute and the volume of a solution is related to the concentration of the solution.

Question 4

Why is it not always possible to obtain the calculated amount of a product?
-why the percentage yield isn’t 100%

Answer 4

• the reaction may not go to completion because it is reversible
• some of the product may be lost when it is separated from the reaction mixture
• some of the reactants may react in ways different to the expected reaction

Question 5

explain why a particular reaction pathway is chosen to produce a specified product

-given appropriate data such as
atom economy (if not calculated), yield, rate, equilibrium position and usefulness of by-products.

Question 6

Explain how the concentration of a solution in mol/dm^3 is related to the mass of the solute and the volume of the solution