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Solubility Rules

Q. What does it mean for a compound to be soluble? Insoluble? a) A compound is termed soluble if it dissolves in water. A compound is insoluble if it does not dissolve in water. b) A compound is termed soluble if it does not dissolve in water. A compound is insoluble if it dissolves in water.

Solved • Mar 13, 2020

Solubility Rules

Q. A student has an unknown solution. She knows that the solution could be NaCl(aq), Mg(NO3)2(aq) or Ca(NO3)2. When a solution of silver nitrate was added to her unknown, there was no reaction. When a solution of sodium sulfate was added to her unknown, a white precipitate appeared. What is her solution? Explain your reasoning and write the molecular equation for the reaction that produced the precipitate.

Solved • Mar 26, 2020

Solubility Rules

Q. (Show the products formed then make your prediction) Predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixed: (a) NaOH + HClO4 (b) FeCl2 + KOH (c) (NH4)2SO4 + NiCl2 (d) CH3CO2Na + HCl

Solved • Mar 25, 2020

Solubility Rules

Q. A 0.1044 g sample of the salt MCl was dissolved in water (making it in the aqueous phase). An excess of AgNO3 (aq) was added, precipitating 0.0889 g AgCl. What is the identity of M

Solved • Mar 23, 2020

Solubility Rules

Q. Select the reagent that will separate the pairs of ions listed. Drag each label to the appropriate target.

Solved • Feb 27, 2020

Solubility Rules

Q. A solution contains some or all of the ions Cu^2+, Al^3+, K^+, Ca^2+, Ba^2+, Pb^2+, and NH4^+. The following tests were performed, in order, on the solution. 1. Addition of 6 M HCl produced no reaction. 2. Addition of H2S with 0.2 M HCl produced a black solid. 3. Addition of (NH4)2S produced a white solid. 4. Addition of (NH4)2HPO4 in NH3 produced no reaction. 5. The final supernatant when heated produced a purple flame. Identify which of these ions were present in the solution, which were absent, and which ones no conclusions can be drawn. Drag the appropriate items to their respective bins.

Solved • Feb 27, 2020

Solubility Rules

Q. When an aqueous solution of silver nitrate is mixed with an aqueous solution of potassium chloride: A. all ions remain in solution B. potassium nitrate precipitates. C. silver metal precipitates. D. silver chloride precipitates. E. no visible change occurs.

Solved • Mar 17, 2020