Fescn2 В Equilbrium - Lechatelier's Principle Lab Part 1 -

Below is a structured template for a formal lab paper based on standard chemistry practices. Title: The Effect of Concentration and Temperature on the Equilibrium Date: [Insert Date] Name: [Your Name] 1. Introduction

, or changing temperature) and compared to a reference tube. Use a table to clearly record what you saw. Stress Applied Observed Color Change Direction of Shift Add Darker red-brown Right (toward products) Add KSCNcap K cap S cap C cap N Darker red-brown Right (toward products) Add Na2HPO4cap N a sub 2 cap H cap P cap O sub 4 AgNO3cap A g cap N cap O sub 3 Color fades/becomes yellow Left (toward reactants) Increase Temp (Heat) Color fades Left (exothermic reaction) Decrease Temp (Ice) Darker red-brown Le Chatelier Lab ANSWERS: Fe3+ and FeSCN2+ Equilibrium

The purpose of this experiment is to observe how a chemical system at equilibrium responds to various disturbances, as predicted by . The specific system studied is the formation of the iron(III) thiocyanate complex ion: FeSCN2 В Equilbrium - LeChatelier's Principle Lab Part 1

6 test tubes, test tube rack, ice bath, hot water bath. Procedure: A stock solution of FeSCN2+cap F e cap S cap C cap N raised to the 2 plus power

To write your lab report for the experiment, you should focus on how external "stresses"—like concentration or temperature—shift the balance between the reactants and the reddish-brown product. Below is a structured template for a formal

was prepared and divided into test tubes. Each tube was subjected to a specific stress (adding more Fe3+cap F e raised to the 3 plus power SCN−cap S cap C cap N raised to the negative power , adding a reagent to remove Fe3+cap F e raised to the 3 plus power

Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq)+heatcap F e raised to the 3 plus power open paren a q close paren plus cap S cap C cap N raised to the negative power open paren a q close paren is in equilibrium with cap F e cap S cap C cap N raised to the 2 plus power open paren a q close paren plus heat (Yellow) + (Colorless) ⇌is in equilibrium with (Dark Red/Brown) Use a table to clearly record what you saw

According to Le Châtelier, if a stress (change in concentration or temperature) is applied to this system, the equilibrium will shift to counteract that change. Chemicals: (Iron(III) nitrate), (Potassium thiocyanate), Na2HPO4cap N a sub 2 cap H cap P cap O sub 4 AgNO3cap A g cap N cap O sub 3 (for removing ions), distilled water.