Mole Ratio

Introduction
During the course of the experiment the enthalpy change of a serial of responses were measured. The main goal was to determine the stoichiometry of an oxidation-reduction reaction in which the reactants are known (NaOCl) & (Na2S2O3 in NaOH).
Procedure
First step was to dress out up the temperature probe and started the logger pro program.
Measured 25.0mL of the 0.50 M NaOCl resoluteness in a stabilized Styrofoam cup and immersed the speck of the temperature probe in the cup of this solution allowing the program to touch graph a few initial Temp. readings for data collection.
wherefore 25mL of the Na2S2O3 solution was added to the previous solution while stirring the reaction mixtures with the temperature probe.
Data collection should stop after 3 proceedings or may be stop if temp reaches a stand still before the 3 minute judgment of conviction frame.
Maximum temperature change is to be recorded as data.
steps are repeated various times at a book of account of 50mL to get three measurements on either locating of the symmetry that produces the greatest temp change.




Discussion
DATA TABLE
Initial Temp
(C) hoi polloi OCL- (mL)Volume S2O3^2- (mL)Temperature Change (C)Final Temp
(C)
23.225mL25mL12.2 C35.4 C
23.720 mL30mL10.3 C34 C
23.730 mL20mL16.1 C39.8 C
23.



540mL10mL22 C45.5 C
23.745 mL5mL12.4 C36.1 C

Results
Based on the data it was found that the thiosulfate solution was the limiting reactant, because temperature decreased. Mixing opposite volumes of the two reactants resulted in different temperature changes. The temperature change was directly relative to the quality of reactants consumed, because the goal of the experiment was to make the volume of the solution and the total number of moles of the reactants constant. Therefore leaving the optimum ratio; that was determined after the results of the experiment to be the ratio of the volume of reactants that consumed the greatest amount of reactants, formed the greatest amount of...If you compliments to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .