6.3 Acid-Base Solutions Phet Simulation

Go to the phet simulation and click on introduction.

Click on Water and Molecules, Drag the pH meter into the solution to get the pH reading

Notice the chemical reaction for water. The product H₃O⁺.is the same as an H⁺ ion. This means a compound with H in front.

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1

The magnifying glass shows the products that form when water breaks down into 2 ions H₃O⁺ (acid) and OH^-(base).
Which is true about the solution that forms when water breaks down into it's 2 ions.

H₃O⁺ = OH^-

OH^-> H₃O⁺

H₃O⁺ > OH^-

1

Based on your response to question 1, why do you think the pH of this solution is 7 (neutral)?

The number of H₃O⁺ is greater than OH^-making the solution neutral

The number of H₃O⁺ is the same as OH^- making the solution neutral

The number of H₃O⁺ is less than OH^-making the solution neutral

1

Click on strong acid. What do you notice happens to the solution? Click all that apply

The original H⁺A^-compound in the reactants has completely broken apart into H₃O⁺ and A^-ions.

Part of the H⁺A^- compound in the reactants breaks down into H₃O⁺ and A^- ions, and part of the original H⁺A^- compound remains in solution.

The solution is considered a strong acid because it has a low pH value close to 1.

The solution is considered a weak acid because it has a pH value closer to 7 than 1.

1

Click on weak acid. What do you notice happens to the solution? Click all that apply

The original H⁺A^-compound in the reactants has completely broken apart into H₃O⁺ and A^-ions.

Part of the H⁺A^- compound in the reactants breaks down into H₃O⁺ and A^- ions, and part of the original H⁺A^- compound remains in solution.

The solution is considered a strong acid because it has a low pH value close to 1.

The solution is considered a weak acid because it has a pH value closer to 7 than 1.

1

Click on strong base. What do you notice about the solution?

1

Click on weak base. Compare this to strong base. What's similar and what is different?

1

What do you think the double sided arrow in a chemical reaction means?

The reactants form only into the products

The products form only into the reactants

Once the reactants form into the products some of the products react and form back into the reactants

1

Why do you think strong acids and bases have a 1 sided arrow and weak acids and bases have a double sided arrow?
Strong acid:
Weak acid:

1

Click on graph. Play around with the simulation by clicking on strong and weak acids and bases.
What patterns do you notice in the concentrations (amount) of reactant compounds and product ions that form in the solutions.

Click on strong base. What do you notice about the solution?

The magnifying glass shows the products that form when water breaks down into 2 ions H3O+ (acid) and OH- (base). Which is true about the solution that forms when water breaks down into it's 2 ions.

Based on your response to question 1, why do you think the pH of this solution is 7 (neutral)?

Click on strong acid. What do you notice happens to the solution? Click all that apply

Click on weak acid. What do you notice happens to the solution? Click all that apply

Click on strong base. What do you notice about the solution?

Click on weak base. Compare this to strong base. What's similar and what is different?

What do you think the double sided arrow in a chemical reaction means?

Why do you think strong acids and bases have a 1 sided arrow and weak acids and bases have a double sided arrow? Strong acid: Weak acid:

Click on graph. Play around with the simulation by clicking on strong and weak acids and bases. What patterns do you notice in the concentrations (amount) of reactant compounds and product ions that form in the solutions.

The magnifying glass shows the products that form when water breaks down into 2 ions H3O+ (acid) and OH- (base). Which is true about the solution that forms when water breaks down into it's 2 ions.

Based on your response to question 1, why do you think the pH of this solution is 7 (neutral)?

Click on strong acid. What do you notice happens to the solution? Click all that apply

Click on weak acid. What do you notice happens to the solution? Click all that apply

Click on weak base. Compare this to strong base. What's similar and what is different?

What do you think the double sided arrow in a chemical reaction means?

Why do you think strong acids and bases have a 1 sided arrow and weak acids and bases have a double sided arrow? Strong acid: Weak acid:

Click on graph. Play around with the simulation by clicking on strong and weak acids and bases. What patterns do you notice in the concentrations (amount) of reactant compounds and product ions that form in the solutions.

The magnifying glass shows the products that form when water breaks down into 2 ions H₃O⁺ (acid) and OH^-(base).
Which is true about the solution that forms when water breaks down into it's 2 ions.

Why do you think strong acids and bases have a 1 sided arrow and weak acids and bases have a double sided arrow?
Strong acid:
Weak acid:

Click on graph. Play around with the simulation by clicking on strong and weak acids and bases.
What patterns do you notice in the concentrations (amount) of reactant compounds and product ions that form in the solutions.

The magnifying glass shows the products that form when water breaks down into 2 ions H₃O⁺ (acid) and OH^-(base).
Which is true about the solution that forms when water breaks down into it's 2 ions.

Why do you think strong acids and bases have a 1 sided arrow and weak acids and bases have a double sided arrow?
Strong acid:
Weak acid:

Click on graph. Play around with the simulation by clicking on strong and weak acids and bases.
What patterns do you notice in the concentrations (amount) of reactant compounds and product ions that form in the solutions.