Suppose in Part B you used 10 mL of yeast suspension instead of 5 mL. Select all
ID: 856808 • Letter: S
Question
Suppose in Part B you used 10 mL of yeast suspension instead of 5 mL. Select all of the following that are true in this case. Choose all that apply. a) Yeast acts as a catalyst, b) Yeast is a stoichiometric reagent (twice as much yeast will mean twice as much O2 released), c) More yeast may make the reaction occur faster., d) More yeast may make the reaction occur more slowly, e) It will significantly increase the volume of O2 released., f) It will significantly increase the volume of O2 released, g) It will significantly decrease the volume of O2 released, h) It will not significantly change the volume of O2 release
Explanation / Answer
I belive that these reactions would give relatively pure Acetone and Hydrogenperoxide, if they are correct.
Please correct me if I'm wrong
Excerpt from one of my chemistry texts:
There are many organic peroxides and hydroperoxides.
Peroxo carboxylic acids, for example peracetic acid,
CH3C(O)OOH, can be obtained by the action of H2O2 on
acid anhydrides. The peroxo acids are useful oxidants
and sources of free radicals, for example by treatment
with Fe(2+) (aq). Benzoyl peroxide and cumyl
hydroperoxide are moderately stable and widely used
where free radical initiation is required, as in
polymerization reactions.
Organic peroxo compounds are also obtained by
autoxidation of ethers, alkenes, and the like, on
exposure to air. Autoxidation is a free radical chain
reaction initiated by radicals generated by
interaction of oxygen and traces of metals such as Cu,
Co, or Fe. The attack on specific reactive C-H bonds
by a radical (X*), first gives R* and then
hydroperoxides that can react further.
RH + X* --} R* + HX
R* + O2 --} RO2*
RO2* + RH --} ROOH + R*
Explosions can occur on distillation of oxidized
solvents. These solvents should be washed with
acidified FeSO4 solution or, for ethers and
hydrocarbons, passed through a column of activated
alumina. Peroxides are absent when the Fe(2+) + SCN-
reagent does not give a red color indicative of the
Fe(SCN)(2+) ion.
This is ment for reodor felgen, if he has found his way into the new forum.
(Norwegian)
Ammonium nitrat f