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For each of the metal ions that reacted with the iodide ion, I^-, write the net

ID: 507831 • Letter: F

Question

For each of the metal ions that reacted with the iodide ion, I^-, write the net ionic equation and state the observation that indicated the reaction had occurred. For each of the metal ions that reacted with the carbonate ion, CO^2-_3, write the net ionic equation and state the observation that indicated the reaction had occurred. For each of the metal ions that reacted with a limited amount of aqueous ammonia, NH_3, write the net ionic equation and state the observation that indicated the reaction had occurred.

Explanation / Answer

In all these reactions, a colored precipitate (solid, denoted by s) insoluble in water is formed.

1) Cu+2 (aq) + 2 I-1 (aq) ------> CuI2 (s, unstable)

2 CuI2 (s) -----> Cu2I2 (s, brownish) + I2 (aq)

Fe+3 (aq) + 3 I-1 (aq) -----> FeI3 (s, unstable)

2 FeI3 (s) -----> 2 FeI2 (s, white) + I2 (aq)

Pb+2 (aq) + 2 I- (aq) -----> PbI2 (s, yellow)

2) Co+2 (aq)+ CO3-2 (aq) -------> CoCO3 (s, pink)

Cu+2 (aq) + CO3-2 (aq) -------> CuCO3 (s, green)

Mn+2 (aq) + CO3-2 (aq) ------> MnCO3 (s, white to faint pink)

Pb+2 (aq) + CO3-2 (aq) ------> PbCO3 (s, white)