Exercise 1 Stoichiometry and a Precipitation Reaction In this exercise, you will use stoichiometry to determine the amou

[answerhappygod]

Exercise 1 Stoichiometry and a Precipitation Reaction
In this exercise, you will use stoichiometry to determine theamount of reactant needed to create the maximum amount ofproduct in a precipitation reaction. After performing the reaction,you will calculate the percent yield of product.
Procedure
Na2CO3(aq)+CaCl2⋅2H2O(aq) → CaCO3(s)+2NaCl(aq)+2H2O(aq)
Figure3.
Tared scale with the small square of paper.
Note: As the scale weighs to the nearest tenth of agram, round up when weighing the Na2CO3.This will ensure that there is sufficientNa2CO3 to react with theCaCl2.
Figure4.
Folding of filter paper.
Note: Be careful not to overfill the funnel. It may benecessary to gently swirl the funnel to keep the precipitate fromclogging the paper, but be careful not to touch thefilter paper so that it does not tear.
Note: Lift the funnel periodically during this time tofacilitate the water draining into the beaker. Again, do not touchthe filter paper so that it does not tear.
Figure5.
Filter paper with precipitate set on paper towel todry.
Note: Ensure the filter paper is placed in a locationthat does not have flowing air, such as a fan or airvent.