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Change your browser settings or visit www. Instructions The "Print" button will print the the contents of the left-scrollable region of this window. This is useful if you have a small screen with no room for both your work area and these instructions. You will still need this window nearby to click on links and to view the contents of the right-scrollable region.
Clicking on the title bar brings a window to the front. Unlike windows in your desktop applications, only the title bar can be used to bring a window to the front! The beaker with the rotating stirring rod contains a weak acid.
In the "Initialize" panel the textbox adjacent to the label pK specifies a value of 4. The pK of acetic acid is 4. Positioned above the flask is a burette that contains a strong base such as NaOH.
Click on the button "? This stopcock is the only hotspot in this simulation. Clicking on the red stopcock delivers a continuous stream of concentrated NaOH to the beaker beneath. Did you see the readout of the pH meter change as NaOH was added to the beaker? Did you see that the concentrations of acetic acid [HA] and acetate [A] change in the "Calculate" panel?
Verify that the "Initialize" conditions of your laboratory are: If you have graph paper available, plot Base Added x-axis vs pH y-axis. Table 1 displays the results we obtained and Figure 1 displays our plot.Pearson, as an active contributor to the biology learning community, is pleased to provide free access to the Classic edition of The Biology Place to all educators and their students.
LABORATORY EXPERIMENTS (Items 1 - 2) The window on your left with the title bar "Acid Base Titration" contains a device that simulates the titration of a weak acid such as acetic acid.
It is therefore possible to determine the concentration of acetic acid in vinegar by titrating the vinegar with a strong base such as aqueous sodium hydroxide solution. LabBench Activity Dissolved Oxygen and Aquatic Primary Productivity.
by Theresa Knapp Holtzclaw. Introduction. In an aquatic environment, oxygen must be dissolved in order to be available for use by organisms.
42 thoughts on “ Iodine experiment ” Ali April 5, at am. Did you ever try ‘supplementing’ with kelp and/or lots of fish and seafood instead of isolated iodine.?
The difference being of course, that food contains all the supportive elements rather than just one. A couple weeks ago, I blogged about our blueberries.I thought the comments were interesting, especially on the topic of dehydrating. The consensus was that home-dried blueberries end up .