4th Titration Practice

What allows us to know when the end point has been reached?

• Bubbles

• Feels warm

• indicator changing color

• Turns to a solid

A solution with a pH of 8.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

Why do we perform a titration?

• To determine the concentration of an unknown solution

• To see if a reaction will occur between an acid and base

• To find the mass of an unknown acid

• To find the molar mass of an unknown solution

• To calculate the viscosity of the solution

If it takes 54 mL of 0.1 M NaOH to neutralize 125 mL of an HCl solution, what is the concentration of the HCl? (record you answer with the correct unit)

• 0.043 M

• 0.034 M

• 0.065 M

• 0.77 M

A 25.0 mL sample of HCl was titrated to the endpoint with 15.0 mL of 2.0 M NaOH. What is the molarity of HCl?

• 1.6 M HCl

• 0.03 M HCl

• 0.6 M HCl

• 1.2 M HCl

If it takes 25 mL of 0.05 M HCl to neutralize 345 mL of NaOH solution, what is the concentration of the NaOH solution?

• 0.0036 M NaOH

• 0.00125 M NaOH

• 3.62 M NaOH

• 1.25 M NaOH

What is the endpoint of a titration

• Where the amount of acid and base are balanced according to the equation
• Where there is no base
• At the end

A titration works by using a ___________________________ reaction.

• Single Replacement

• Neutralization

• Combustion

• Synthesis

Indicators are used in a titration by changing ___________________ at different pH levels.

• smell

• shape

• phase

• color

In a titration, the solution changes color at the

• end point

• equivalence point