Giovanni created this chart to study for an exam.

compound i uses

sodium hydroxide (naoh) plastic, soap, and paper production

iron oxide (feo) toothpastes and antacids

calcium chloride (cacl2) snow removal

calcium carbonate (caco3) dark pigment in makeup

which best describes how to correct the error in the chart?

a) remove “plastics” from the uses for sodium hydroxide.
b) swap the uses for iron oxide and calcium carbonate.
c) change the use for calcium chloride to “used in preservatives.”
d) add “de-ice roads” to uses for calcium carbonate.

Answer asap need 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.