Monday, November 17, 2014

Electrolysis Lab (again)

At the anode, the  reaction is 2H2O(l) --> O2(g+ 4e- + 4H+ which is the sight of oxidation. The cathode's half reaction, 2H2O(l) + 2e- ==> 2H2(g) + 2OH- , is the sight of reduction. The difference between the galvanic, or voltaic, cell and the electrolytic cell is the spontaneity. Galvanic cells are spontaneous, whereas electrolytic cells are not. Electrolytic cells require an outside energy in order to react, which means this non-spontaneous cell has to be hooked up to something that will give it voltage so there is an actual redox reaction. Galvanic cells can react on there own by being placed in their own aqueous solution and completed with a wire and a salt bridge to keep the solutions neutral. 
Calculations: For the amount of oxygen gas I got .00065 moles of O2 gas
                    For the amount of hydrogen gas I got .0026 moles of H2 gas
vkwuC8_6AUZyA8xslGuwuKTgd9wzc-SmjRDyxGI2Gzxp8Gttbked1J0nihLvm2DTeQJd5tUgF4ciaHnX2BgerclHnwvSZT6Vv2lMhbSnqUqIJi1_eyMvtIMWMYFkLOOgCoKlrHd3a7JPSoSA6ZesFvRWSEUc3pr6JXgDHX7HxOJWsQSn_x-XtUgNvtbTpMejAWMR2APYXOYZ4PUWYpol37KRZ9JMU7LvEDvHrZcbOeYXcjleZbCcGbi3qAh2smLD0p4Y2PSCdwzqq3lbysFpWjuktnYL4QHCeyqPX9TT4CLR9H6gUJrrNgJVj17ihOB4wYSX7X_7AjtjA-nXv3frV4hUIFqNl4clXd6e3rRdE6gk60dozKyygENAVN0szLLaPIaXhkM5T6052pgSlZiQKmF4AHB9TKz3aCyqNmKn2lugcJ1lCJgdEFDKb3YnnkvdbzVyRfkFKXuLknI1k-84ezHSFOdTYCQzHTJj_l5fc3jGWwoX6xCUkSinSPI5RDSLZykfC_yPwC-s2juF5oFABvl5XvfyHR0eb4J_5G2W1CS9afBWqKFsoFbudfTxJC2Re6RDWQo=w1000-h389-l75-ft (292×389)

No comments:

Post a Comment