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ceruleanjellyfish751Lv1

28 Sep 2019

The chemical reaction that are used in the anion spot tests in this experiment are the most part simple precipitation or acid-base reactions. Given the information in each test procedure, try to write the net ionic equation for the key reaction in each test.

a. CO3 2-
b. SO4 2-
c. PO4 3- (Reactions are HPO4 2-, NH4+, MoO4 2-. and H+; products are (NH4)3PO4* 12 MoO3 and H2O; no oxidation or reduction occurs.)
d. SO3 -2
e. SCN-
f. Cl-
g. NO3- (Take as reactants Al and NO3-; as products NH3 and AlO2-; final equation also
contains OH- and H2O as reactants.)

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Deanna HettingerLv2

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The chemical reaction that are used in the anion spot tests in thisexperiment are the most part simple precipitation or acid-basereactions. Given the information in each test procedure, try towrite the net ionic equation for the key reaction in eachtest.

a. CO3 2-
b. SO4 2-
c. PO4 3- (Reactions are HPO4 2-, NH4+, MoO4 2-. and H+; productsare (NH4)3PO4* 12 MoO3 and H2O; no oxidation or reductionoccurs.)
d. SO3 -2
e. SCN-
f. Cl-
g. NO3- (Take as reactants Al and NO3-; as products NH3 and AlO2-;final equation also
contains OH- and H2O as reactants.)

Based on the following anions: Br^-, CO3^2-, Cl^-, I^-, NO3^-, NO2^-, PO4^3-, SO4^2-, SO3^2-

1.) Which anions give a precipitate with Ba^2+ ion that is soluble in HNO3?

2.) Which anions evolve a gas when acid is added?

3.) Which anions release an odorous gas as a product?

4.) Which anions are involved in an oxidation-reduction reaction as part of one of the following confirmation reactions?

5.) Which anions do not produce a precipitate in any of the following classification or confirmatory reactions?

Classification Reaction 1: Formation of insoluble salts, such as BaCO3, BaSO4, BaSO3, Ba3(PO4)2

Classification Reaction 2: Formation of volatile products when H3O^+ ion is added to such anions as CO3^2-, NO2^-, SO3^2- ions

Classification Reaction 3: Formation of insolube silver salts, such as AgBr, AgCl, AgI

Sulfate Ion Confirmatory Reaction: Na2SO4 dissolved in water, then add BaCl2 solution, then add HNO3

Sulfite Ion Confirmatory Reaction: Na2SO3 dissolved in water, then add H2SO4

Nitrate Ion Confirmatory Reaction: NaNO3 dissolved in FeSO4, then add H2SO4

Nitrite Ion Confirmatory Reaction: NaNO2 dissolved in water, then add H2SO4

Carbonate Ion Confirmatory Reaction: Na2CO3 placed in water, then add H2SO4.water

Phosphate Ion Confirmatory Reaction: Na3PO4 dissolved nitric acid, then add (NH4)2MoO4

Halide Ion Confirmatory Reaction: NaCl dissolved in water, then add chlorine water, then add CH2Cl2

Answer the following questions based on the following anions: Br^-, CO3^2-, Cl^-, I^-, NO3^-, NO2^-, PO4^3-, SO4^2-, SO3^2-.

1.) Which anions give a precipitate with Ag^+ ion that is insoluble in HNO3?

2.) Which anions are involved in an oxidation-reduction reaction as part of a confirmation reaction (see list of confirmation reactions below).

3.) Which anions give a precipitate with Ba^2+ ion that is soluble in HNO3.

4.) Which anions evolve a gas when acid is added.

5.) Which anions release an odorous gas as a product.

6.) Which anions do not produce a precipitate in any of the following classification or confirmatory reactions.