Question

CH 111 - Introduction to Inorganic and Organic Chemistry Lab 10 - Exp. 341 Synthesis of Strontium lodate In this lab, we will perform a synthesis reaction to generate a desired product. Synthesis reactions are performed in many different industries including fertilizers, plastics, pharmaceuticals and many others. The goal in a synthesis reaction is to generate and obtain as much of the desired product as possible. In this synthesis, the reaction between KIO, (potassium iodate) and Sr(NO3)2 (strontium nitrate) produces our desired product Sr(103)2 - H2O (strontium iodate monohydrate). The chemical equation is shown below. When performing a synthesis, the theoretical yield of the product is calculated, which tells you the maximum amount of product that can be formed based on the amount of the reagents you started with. One of the reactants will be the limiting reagent, which is the one that will run out first. The calculation of the theoretical yield for this reaction will be discussed in the calculations section. 2 KIO, (aq) + Sr(NO3)2 (aq) Sr(103)2 - H20 (s) + 2 KNO: (aq) In this reaction, the two reactant solutions are mixed together, forming a precipitate. A precipitate is a compound that is insoluble in the solution that it is in and will become a solid and usually settle to the bottom of the reaction container. The liquid above the solid is called the supernatant liquid. To separate the solid from the liquid, a gravity filtration is performed by pouring the mixture through a piece of filter paper. The liquid that goes through the filter is referred to as the filtrate. The solid is obtained from the filter paper, dried in an oven and then massed to find the actual yield of product, which is the amount you get after your experiment is complete Supplementary Questions 1. What is the complete molecular equation for this reaction? 2. What is the net ionic equation for this experiment? 3. What are the spectator ions in this experiment? From "Precipitation Video 4. What type of compounds is water good at dissolving? 5. What is the term when ionic compounds fall out of a solution? From "Gravity Filtration Video

Answer 1

Supplementary questions; 1 ) Molecular equation of pottasium iodate react with strontium nitrate ; Sr(NO3)2(aq) + 2KIO3(aq) + H2O(l) $\rightarrow$ Sr(IO3)2 .H2O(s) + 2KNO3(aq) 2 )    IONIC EQUATION; Sr2+(aq) + 2NO3-(aq) + 2K+(aq) + 2IO3 - (aq) + H2O(l) $\rightarrow$ Sr(IO3)2 .H2O(s) + 2K+(aq) + 2NO3-(aq) . Cancelling the identical terms in both sides of reaction,we get the net ionic equation. THE NET IONIC EQUATION;; Sr2+(aq) + 2IO3 - (aq) + H2O(l) $\rightarrow$ Sr(IO3)2 .H2O(s) 3) The spectator ions in the reaction is 2k+(aq) and 2NO3-(aq) A spectator ion is the ions that exist in both reactant and product side in same form in the reaction.So,2k+(aq) and NO3-(aq) are spectator ions in the reaction.