galvanic cell lab sources of error Van Nuys California

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galvanic cell lab sources of error Van Nuys, California

Suppose, you add 25.0 mL of a 0.550 M NaOH(aq) solution to 30.0 mL of a 0.450 M HCl(aq) solution.? P Whiting 365 views 5:32 Electrochemical Cells Lab Explanation Video - Duration: 27:25. Loading... Loading...

These voltages allowed for the calculation of the Standard potential for the oxidation and the reduction and the standard cell potential of the system, which was E ° cell = -.908 However, when the experiment moved to the portion of the experiment measuring temperature vs. Bozeman Science 227,493 views 8:44 Galvanic Cell Battery Lab - Duration: 4:15. You can only upload photos smaller than 5 MB.

I lost a mark in mid-course for not specifically stating that reason. Sign in to add this video to a playlist. Sign In   Sign In Remember me Not recommended on shared computers Sign in anonymously Sign In Forgot your password? Kramer 22 December 2010 Lab 12 Daniell Cell Introduction: In voltaic Lab 12 - Daniell Cell 3 pages iabl e s Independent Variable The use of different concentrations for Copper Vaughan

The system returned: (22) Invalid argument The remote host or network may be down. These reactions are Cu 2+ + 2e -  Cu and Zn  Zn 2+ + 2e - (Reduction and Oxidation respectively). The internal resistance is not something you can get rid of. The strongest oxidizing and strongest reducing agent are the same value with opposite signs.

You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG, or RM. The natural movement of the electrons is closely related to the Gibbs Free Energy of the reaction; that is, as Gibbs Free Energy becomes more negative (and therefore more spontaneous), the The second portion of the experiment involved measuring the voltage of a Cu/Pb cell at different decreasing temperatures of solution. This was identified when the copper sulfate solution was placed onto the zinc and the zinc sulfate solution was placed onto the copper piece.

Course Hero is not sponsored or endorsed by any college or university. One thing that I would suggest you look at is the oxidation of electrodes, and how this can potentially affect your experiment. 1 person likes this Share this post Link to Periodic table vocab 2 pages Rate laws vocab FSU CHEMISTRY 101 - Summer 2014 Rate laws vocab Absorbance Spectroscopy - An analytical technique that shines light o Rate laws vocab 2 Transcript The interactive transcript could not be loaded.

Technically, we should have diluted 1 mL of Pb with ~8.5 mL DI water (to get a total of ~9.5 mL) instead of diluting with 9 mL DI water. The lack of accuracy in the measuring equipment resulted in measured values that were inconsistent with the actual values. Use the different metals (Ag/Ag+; Mg/Mg2+; Cu/Cu2+; Pb/Pb2+; Fe/Fe3+; Zn/Zn2+) and repeat steps 1-4 using the solutions that correspond to them. Raw Data Total volume of gas produced from reaction of 6 molar HCl with Zinc Total Chemistry Design lab 1 pages Periodic table vocab FSU CHEMISTRY 101 - Summer 2014 Periodic

cell potential, the experiment became inaccurate quite quickly. Lab Report Electrochemical cells lab report Started by tribianni, May 23, 2014 lab report voltaic cell zinc copper cell error sources tribianni Members 7 posts Exams: May 2015 It appears that the functionality of the voltmeter was not correct, therefore giving results that were not accurate. The voltage of a Cu/Pb cell was then measured at different temperatures and then used to calculate Gibbs Free Energy, which was graphed vs.

This is the end of the preview. This could possibly impede electron movement in some readings which may altered the voltage recorded. Course Hero, Inc. Sign up to view the full document.

Group 2: E=0.16 V% Error= 12.5% Group 2: Ksp=0.0004 Group 2:Kf= 3.07% Error = 100% Experimental Sources of Error plus or minus 0.01 reading of the graduated cylinder and the voltage Discussion of Theory Theories: Nernst equation, anode, cathode, oxidation-reduction, and salt bridges Nernst Equation: At 25 degrees Cconcentration increases/decreases spontaneityIf Q < 1 the Ecell increases and becomes more spontaneous (ln Avoid cheap voltmeters with lower input impedances. As is apparent in Graph 4, this set of data gives a positive slope (144.1 J), when in fact, in a graph of Gibbs Free Energy vs.

With this the equilibrium constant was found to be 2.088 x 10 13 . Sign in to add this to Watch Later Add to Loading playlists... From the first part two half reactions were written showing that two electrons were transferred from zinc to copper. Expand» Details Details Existing questions More Tell us some more Upload in Progress Upload failed.

nathanjones0117 15,575 views 27:25 Galvanic Cells (Voltaic Cells) - Duration: 23:35. Write the name of each salt produced. 1. thanks! This then consequently affected the Gibbs Free Energy, and led the experiment to a very dissatisfying end.

Share Share this post on Digg Del.icio.us Twitter Facebook Reddit! Loading... sulfuric Acid Reactions Practice Problems - No Solutions 5 pages Calorimetry Lab Report Washington CHEM 152 - Winter 2010 Name: ID Quiz Section: Lab Partner: EXPERIMENT 3: CALORIMETRY By signing below, Lab Concentration vs.