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Chemistry, 22.06.2019 10:30, scott5315
Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + Ā½o2(g) ā mgo(s) + 146 kcal/mole h2(g) + Ā½o2(g) ā h2o(g), Ī“h = -57.82 kcal/mole what type of reaction is represented by the previous two examples?
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Chemistry, 22.06.2019 18:00, kyllow5644
Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
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