Acid Base Calculations

A titration works by using a ___________________________ reaction.

• Single Replacement

• Neutralization

• Combustion

• Synthesis

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

Tags

NGSS.HS-PS1-7

What is the conjugate base in the following reaction equation: H₂SO_3(aq) + OH^-_(aq) —> HSO₃^-_(aq) + H₂O_(l)

• H₂SO_3(aq)

• OH^-_(aq)

• HSO₃^-_(aq)

• H₂O_(l)

What is the molar ratio of sulfurous acid to hydroxide in the following equation: H₂SO_3(aq) + OH^-_(aq) —> HSO₃^-_(aq) + H₂O_(l)

• 2 : 3

• 1 : 1

• 3 : 2

• 1 : 2

Tags

NGSS.HS-PS1-7

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

• smell

• shape

• phase

• color

If it takes 50 mL of 0.5 M Ca(OH)₂ to neutralize 125 mL of sulfuric acid, what is the concentration of the acid?

• 0.2 M

• 5 M

• 0.5 M

What is the molarity of a NaOH solution if 11.6 mL of 3 M HCl was used to neutralize 25 mL of NaOH?

• 1.392 M

• 0.155 M

• 0.718 M

Tags

NGSS.HS-PS1-7

I have 50cm³ of 0.1M HCl. How many moles of NaOH will I need to neutralise it?

• 5

• 0.5

• 0.05

• 0.005

What mass of KHP will be completely neutrilized by 32.57 cm³ 0.175 M standard NaOH solution? The Molar Mass of KPH is 204.22 g/mol.

• 23.28 g KHP

• 1.164 g KHP

• 11.64 g KHP

• 2.328 g KHP

Tags

NGSS.HS-PS1-7

Calculate the volume of a 0.15 M Ba(OH)2 solution required to completely neutralize 45 cm³ of a 0.29 M HNO3 solution.

• 43.5 cm³

• 87 cm³

• 23.3 cm³

• 51.9 cm³