Acid pKa Values

A set of vocabulary flashcards mapping various chemical acids and functional groups to their respective pKa values as presented in the Organic Chemistry I lecture notes.

Hydroiodic acid ($HI$)

$$-10$$

Hydrobromic acid ($HBr$)

$$-9$$

Hydrochloric acid ($HCl$)

$$-7$$

Sulfuric acid ($H_2SO_4$)

$$-5$$

Nitric acid ($HNO_3$)

$$-1.3$$

Protonated Carbonyl (Ketone/Aldehyde)

$$-7 \text{ to } -8$$

Protonated Alcohol or Ether

$$-6$$

Protonated Carboxylic Acid

$$-2.5$$

Hydronium ion ($H_3O^+$)

$$-1.7$$

Carboxylic acid ($RCOOH$)

$$5$$

Ammonium ion ($RCH_2NH_3^+$)

$$9 \text{ to } 11$$

Phenol

$$10$$

Water ($H_2O$)

$$15.7$$

Alcohol ($ROH$)

$$16 \text{ to } 18$$

Alkyne ($RC \text{≡} CH$)

$$25$$

Hydrogen gas ($H_2$)

$$35$$

Amine ($RCH_2NH_2$)

$$36 \text{ to } 40$$

Alkene ($R_2C = CH_2$)

$$40$$

Alkane ($CH_4$)

$$50 \text{ to } 60$$