7.5 Equilibrium Lab - Jill Mayorga | Library

Remember to record responses while we work on this. It will be used for your PS1-6 learning target grade, questions 1-6. 

Questions 7- 10 are optional to increase a low LT score

1

What are the reactants in the forward (exothermic) reaction?

1

What are the reactants in the reverse (endothermic) reaction?

1

When the reaction achieves equilibrium the rate of the forward reaction is the same as the rate of the reverse reaction. (both reactions are going at the same speed)

1

The concentration of the reactants equals (is the same as) the concentration of the products when a reaction is at equilibrium

1

Which statement(s) are true if you increase the concentration (amount) of N2 for this reversible reaction at equilibrium. (Select all that apply)

Lab Video- Note it's slightly different than our lab. We're starting at CaCl2  (calcium chloride) being added.  

1

Record your data and observations by clicking on Show your Work

Procedure notes: 

Step 1: 1/2 dropperful of cobalt chlorde (CoCl2)

Step 2: ~1/4 spoonful of calcium chloride CaCl2

Step 3: Add silver nitrate AgNO3 dropwise (~1/4 dropperful)

Step 4: 1 pipetful of water

1

Which reaction (forward or reverse) is endothermic?

1

What is the ratio of moles of Cl-1 ions to CoCl4-2 based on the balanced chemical equation?

1

Use the mole ratio from question 1 to calculate the amount of moles CoCl4-2 that would form if we added 1 mole of Cl-1 to this reaction?

1

Use the molar mass of CoCl4-2 to calculate the mass of CoCl4-2 formed. (Hint: Add the atomic masses together to get your molar mass. Find your mass in grams by multiplying the moles from question 2 by the molar mass. Mols * Molar mass)