Acid/Base Jeopardy

Acid/Base

100

Choose the acid: H₂SO₄ or NaOH

H₂SO₄

200

Choose the base: NaOH or HCl

NaOH

300

Choose the two acids: H₂CO₃, HBr, and Ca(OH)₂

H₂CO₃ and HBr

400

Identify the base: CaCl₂, HBr, or KOH

KOH

500

Which one is not an acid: HCl, HC₂H₃O₂, NH₃, or H₃PO₄

NH₃

Uses of the acid base table in the real life

100

Acid used by the stomach.

What is HCl?

200

This amphoteric chemical is a product in cellular respiration

What is water?

300

Acid rain is composed of two acids __________ and _______.

What is sulfuric and nitric acid?

400

Named after the Latin word "formica," meaning ant. This weak acid is naturally found in insects, weeds, fruits and vegetables.  

What is formic acid?

500

Known as lye and caustic soda, this substance is used to manufacture pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner.

What is Sodium Hydroxide?

Ka/Kb

100

The ionization constant of water, Kw can be calculated by multiplying..

[H3O+][OH−]

200

Predict whether the equilibrium for each reaction lies to the left or the right as written.

• NH⁺⁴_(aq)+PO₄³⁻_(aq)⇌NH_3(aq)+HPO₄²⁻_(aq)

What is forward direction? 

Remember: Acid and bases equilibrium will always favour forming the weaker acid/base pair. 

300

A solution contains 0.0045 M hydrofluoric acid. What is the pH of this solution? 

For hydrofluoric acid, Ka=6.6×10⁻⁴ Ka=6.6×10⁻⁴

0.0045 M hydrofluoric acid

400

Predict where the equilibrium will lie (Left or Right) 

H₂O_(l)+HS⁻_(aq)⇌OH⁻_(aq)+H₂S_(aq)

What is lies to the left?

500

Calculate Kb of the butyrate ion (CH₃CH₂CH₂CO⁻₂The pKa of butyric acid at 25°C is 4.83. Butyric acid is responsible for the foul smell of rancid butter.

note: 

pka= -log (ka) 

Ka*Kb= Kw 

pKb=14.00−4.83=9.17

Definitions

100

An _________ releases H⁺ ions in solution. 

Arrhenius Acid

200

A __________ acts as a proton acceptor. 

Bronsted-Lowry Base

300

when a substance can act as an acid or a base

Amphoteric

400

A ___________ reaction occurs when an acid and a base combine together to form water (H₂O). 

Neutralization

500

________ is the logarithmic scale used to measure the concentration of H⁺ ions in solution. 

pH

pH

100

Is a solution with a pH of 2.5 acidic or basic?

Acidic

200

Is a pH of 8.7 acidic or basic?

Basic

300

Calculate the pH if there are 0.0001 moles of H₃O⁺ ions in the solution.

pH=4

400

Calculate the pH of a solution that has 1x10^-9 M of H₃O⁺ ions. 

pH=9

500

A solution is 0.055 M HBr. What is the pH of this solution?

[H3O+] = 5.5 X 10-2 M

pH = -\log(5.5 X 10-2) = 1.26