Problem: The drawings below represent aqueous solutions. Solution A is 2.00 L of a 2.00-M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00-M aqueous solution of potassium hydroxide.Determine the concentrations (in M) of all ions left in solution after mixing and the mass of solid formed.

🤓 Based on our data, we think this question is relevant for Professor McMills' class at OHIO.

FREE Expert Solution

Step 1


Reactant

Co(NO3)2(aq) Co2+ (aq) + 2 NO3- (aq)

KOH (aq) K+ (aq) + OH- (aq)


Reaction: double displacement


Product

Co2+ (aq) + 2 OH- (aq) Co(OH)2 (s)

K+ (aq) + NO3- (aq) KNO3 (aq)


Balance equation for the reaction:

Co(NO3)2(aq) + 2 KOH (aq) → Co(OH)2 (s) + 2 KNO3 (aq)


Step 2

2.00 L ×2.00 mol Co(NO3)2 1.00 L= 4.00 mol Co(OH)2

2.00 L ×3.00 mol KOH1.00 L= 6.00 mol KOH


Step 3

from Co(NO3)2(aq)

4.00 mol Co(NO3)2×1 mol Co(OH)21 mol Co(NO3)2= 4.00 mol Co(OH)2


from KOH

6.00 mol KOH×1 mol Co(OH)22 mol KOH= 3.00 mol Co(OH)2


limiting reactant → KOH


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Problem Details

The drawings below represent aqueous solutions. Solution A is 2.00 L of a 2.00-M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00-M aqueous solution of potassium hydroxide.

Determine the concentrations (in M) of all ions left in solution after mixing and the mass of solid formed.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Solution Stoichiometry concept. You can view video lessons to learn Solution Stoichiometry. Or if you need more Solution Stoichiometry practice, you can also practice Solution Stoichiometry practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor McMills' class at OHIO.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.