QUESTION 1 2 points Consider the reagents listed in the \"Key warnings\" part of

Question

QUESTION 1 2 points Consider the reagents listed in the "Key warnings" part of the Procedure. Which reagent should be used with the most caution? concentrated sulfuric acid 3 M sulfuric acid 3 M nitric acid 0.1 M silver nitrate solution QUESTION 2 2 points Which of the nine anions will form a precipitate with the barium cation, Ba2+(aq)? @soyA O NO3-O co32. O cr PO43-0 Br so42-ONO2.r QUESTION 3 2 points Save Answer Of the anions that do form a precipitate with the barium cation, which will dissolve again when 3 M nitric acid is added? QUESTION 4 2 points Save Answer Which of the nine anions will form a gas when reacted with 3 M sulfuric acid? QUESTION 5 2 points Save Answer Which of the nine anions will form a precipitate with the silver cation, Ag+ (aq)? (Be careful; you may need to consult the solubility rules.)

Explanation / Answer

Q1

concentrated sulfuric acid (top priority)

then

sulfuric acid + nitric acid --> both are very reactive/caustic and might reac treadily or burn skin

Q2

Ba+2 is not soluble iwth:

SO3-2, SO4-3, CO3-2, PO4-3,,

Q3

BaSO3 + 2 HNO3 = SO2 + H2O + Ba(NO3)2

BaCO3(s) + 2 HNO3(aq) = Ba(NO3)2(aq) + CO2(g) + H2O(l)

Q4

H2SO4 -- SO4-2

gas is formed from:

NO2-; CO3-2, SO3-2

only

Q5

preicpitate with silver:

I-; AgI

SO3-2, Ag2SO3

Cl- = AgCl

CO3-2 = Ag2CO3

PO4-3 -- >Ag3PO4

SO4-2 = Ag2SO4

br- --> AgBr

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