Solubility And StoichiometryI IntroductionThe First Purpose
Solubility and Stoichiometry
I. Introduction
The first purpose of this experiment is to apply solubility rules to choose two of eight given reactants to do a precipitation reaction. The second purpose is to use stoichiometry to calculate how much of a reactant will be used in a precipitation reaction, assuming that the amount of product is given, and to figure out the actual yield vs. the theoretical yield and to calculate the percent yield. The other purpose of this experiment is to practice the gravimetric analysis technique. The solution of Na2SO4 (0.5 M) and BaCl2 (0.1 M) were chosen in this experiment. The equation was used: Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s) + 2 NaCl (aq). However, in this reaction, cation Ba2+ and anion (SO4)2- play the main roles to form precipitated BaSO4: Ba2+(aq) + (SO4)2(aq) = BaSO4 (s).Assuming that 0.200g BaSO4 (s) were produced in this experiment, the volume of Na2SO4 and BaCl2, needed to form 0.200g BaSO4, were determined by using the stoichiometry. The volume of 0.5M Na2SO4 was needed:
The 10-ml graduated Cylinder was used to measure 1.72 ml Na2SO4 (0.5M), which then was poured into test tube # 1. With the same way of calculation, the volume of BaCl2 (0.1M) needed to form 0.200g BaSO4 is 8.58 ml, which was poured in to the test tube #2.
The 50ml-beaker was used as a reaction container. The solution Na2SO4 (1.72ml) was mixed with 8.58ml BaCl2 in this beaker. The content then was stirred and heat up about 20 minutes so that the reaction was done completely.
In this experiment the gravity filtration was used. This technique involves the isolation and collection of a solid precipitate product from an aqueous. A filter paper was labeled, put on a Watch Glass and weighed before filtrating. The paper was then folded to fit inside the filter funnel with a little DI water. All solid (BaSO4) and aqueous in the reaction container (beaker) was transferred to the filter paper. After waiting for BaSO4 being filtered, the filter paper
I. Introduction
The first purpose of this experiment is to apply solubility rules to choose two of eight given reactants to do a precipitation reaction. The second purpose is to use stoichiometry to calculate how much of a reactant will be used in a precipitation reaction, assuming that the amount of product is given, and to figure out the actual yield vs. the theoretical yield and to calculate the percent yield. The other purpose of this experiment is to practice the gravimetric analysis technique. The solution of Na2SO4 (0.5 M) and BaCl2 (0.1 M) were chosen in this experiment. The equation was used: Na2SO4 (aq) + BaCl2 (aq) → BaSO4 (s) + 2 NaCl (aq). However, in this reaction, cation Ba2+ and anion (SO4)2- play the main roles to form precipitated BaSO4: Ba2+(aq) + (SO4)2(aq) = BaSO4 (s).Assuming that 0.200g BaSO4 (s) were produced in this experiment, the volume of Na2SO4 and BaCl2, needed to form 0.200g BaSO4, were determined by using the stoichiometry. The volume of 0.5M Na2SO4 was needed:
The 10-ml graduated Cylinder was used to measure 1.72 ml Na2SO4 (0.5M), which then was poured into test tube # 1. With the same way of calculation, the volume of BaCl2 (0.1M) needed to form 0.200g BaSO4 is 8.58 ml, which was poured in to the test tube #2.
The 50ml-beaker was used as a reaction container. The solution Na2SO4 (1.72ml) was mixed with 8.58ml BaCl2 in this beaker. The content then was stirred and heat up about 20 minutes so that the reaction was done completely.
In this experiment the gravity filtration was used. This technique involves the isolation and collection of a solid precipitate product from an aqueous. A filter paper was labeled, put on a Watch Glass and weighed before filtrating. The paper was then folded to fit inside the filter funnel with a little DI water. All solid (BaSO4) and aqueous in the reaction container (beaker) was transferred to the filter paper. After waiting for BaSO4 being filtered, the filter paper