Titration and Acid-Base Reactions Quiz

What is the purpose of standardizing a NaOH solution in this experiment?

• To calculate the volume of the NaOH solution

• To determine the exact concentration of the NaOH solution

• To neutralize an unknown acid

• To test the reactivity of NaOH

According to Arrhenius theory, which of the following is true?

• Acids produce OH⁻ ions in water

• Bases produce H⁺ ions in water

• Acids produce H⁺ ions in water

• Bases produce H₂ gas in water

What are the products of a reaction between HCl and NaOH?

• H₂O and NaCl

• H₂ and NaCl

• H₂O and NaOH

• NaCl and OH⁻

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following describes a neutralization reaction?

• Acid and base form a weak acid

• Acid and base form water and a salt

• Base produces H⁺ ions

• Acid produces OH⁻ ions

Why is an indicator used in titrations?

• To determine the pH exactly

• To help visually detect the endpoint of the reaction

• To increase the rate of the reaction

• To neutralize the solution

What is the equivalence point in a titration?

• When the color of the indicator changes

• When the acid and base have reacted completely in stoichiometric amounts

• When the solution becomes neutral at pH 7

• When the reaction stops producing H₂ gas

What does the endpoint indicate in a titration?

• When the solution reaches pH 7

• When the acid and base have both evaporated

• When the indicator changes color, signaling reaction completion

• When all the NaOH has dissolved

Which indicator is used on Day 1 of the lab?

• Bromocresol green

• Thymol blue

• Phenolphthalein

• Methyl orange

What does a pink-to-green color change indicate in this experiment?

• The start of the titration

• That the solution is basic

• The titration endpoint

• The solution is acidic

What are the products when an antacid reacts with stomach acid?

• Water and a salt

• H₂ gas and salt

• Base and salt

• CO₂ and OH⁻ ions