Dark purple 3 effect of acids on metals a rates of

This preview shows page 5 - 6 out of 6 pages.

b. Dark Purple 3. Effect of Acids on Metals a. Rates of activity of metals reacting with acids (from most active to least active) i. Magnesium ii. Zinc iii. Iron iv. Copper b. Experienced a delayed reaction 4. The Production and Collection of Hydrogen a. The flame popped once exposed to the hydrogen 5. The Effect of Acids on Carbonates a. The solution took on a white tint in color 6. Measuring The Concentration of an Acid by   Titration a. Drop of NaOH (0.5M): 19 Calculate concentration of unknown acid: Number of drops of base/acid: 19 = Concentration of acid/base: 19 X = 0.95M Conclusion The purpose of this lab was to test acids and bases to determine their effect on indicator dyes. When 3-4 drops of 6M HCL was added to the cavity and tested with the litmus paper, it turned pink. Placing a drop of phenolphthalein on the acid yielded a clear color. Placing 3-4 drops of 0.5M NaOH then testing with litmus paper showed a blue color. I hypothesized that 5
Image of page 5

Subscribe to view the full document.

because of the different levels in pH, the litmus paper would turn blue for bases and pink for acids. When placing a drop of phenolphthalein on the base color, a dark purple color emerged. The effects of acids on a variety of metals was also looked at, which helped order them from most reactive to least reactive in the following order: Magnesium, Zinc, Iron, Copper. Adding 4- 5 drops of Hydrochloric acid to cover the Zinc allowed us to identify the production of hydrogen. I hypothesized that by exposing the gas to the flame will cause the fire to have a popping effect. Finally, we tested the concentration of an unknown acid by titration and reached 0.95M. 6
Image of page 6
  • Spring '16
  • o Cavity

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern