Problem: You choose to investigate some of the solubility guidelines for two ions not listed in the table below, the chromate ion (CrO42 -  and the oxalate ion (C2O42-).You are given 0.01 M solutions (A, B, C, D) of four water-soluble salts:SolutionSoluteColor of SolutionANa2CrO4YellowB(NH4)2C2O4ColorlessCAgNO3ColorlessDCaCl2ColorlessWhen these solutions are mixed, the following observations are made:Experiment NumberSolutions MixedResult1A+BNo precipitate, yellow solution2A+CRed precipitate forms3A+DYellow precipitate forms4B+CWhite precipitate forms5B+DWhite precipitate forms6C+DWhite precipitate formsWrite a net ionic equation for the reaction that occurs in each of the experiments. Identify the precipitate formed, if any, in each of the experiments.Identify the precipitate formed, if any, in the experiment 5.

FREE Expert Solution

Certain positive ions combine with negative ions to form either a liquid, aqueous, solid or gaseous compound. The Solubility Rules help us determine which form is created. 


Experiment 5 reacts solutions B: (NH4)2C2O4 and D: CaCl2 to form a white precipitate.

The reaction of (NH4)2C2O4 and CaCl2 is a double displacement reaction:


 


The product is a white precipitate. 


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Problem Details
You choose to investigate some of the solubility guidelines for two ions not listed in the table below, the chromate ion (CrO42 -  and the oxalate ion (C2O42-).

Table 4.1 gives solubility guidelines for common ionic compounds in water and lists any important exceptions.

You are given 0.01 M solutions (A, B, C, D) of four water-soluble salts:


SolutionSoluteColor of Solution
ANa2CrO4Yellow
B(NH4)2C2O4Colorless
CAgNO3Colorless
DCaCl2Colorless


When these solutions are mixed, the following observations are made:


Experiment NumberSolutions MixedResult
1A+BNo precipitate, yellow solution
2A+CRed precipitate forms
3A+DYellow precipitate forms
4B+CWhite precipitate forms
5B+DWhite precipitate forms
6C+DWhite precipitate forms


Write a net ionic equation for the reaction that occurs in each of the experiments. Identify the precipitate formed, if any, in each of the experiments.

Identify the precipitate formed, if any, in the experiment 5.

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