What are the seven strong acids and bases?
There are only 7 common strong acids.
- HCl - hydrochloric acid.
- HNO3 - nitric acid.
- H2SO4 - sulfuric acid (HSO4- is a weak acid)
- HBr - hydrobromic acid.
- HI - hydroiodic acid.
- HClO4 - perchloric acid.
- HClO3 - chloric acid.
6 Strong Acids and 6 Strong Bases
- Hydrochloric AcidHCl (Strong Acid)
- Hydrobromic AcidHBr (Strong Acid)
- Hydroiodic AcidHI (Strong Acid)
- Nitric AcidHNO3 (Strong Acid)
- Perchloric AcidHClO4 (Strong Acid)
- Sulfuric AcidH2SO4 (Strong Acid)
- Lithium HydroxideLiOH (Strong Base)
- Sodium HydroxideNaOH (Strong Base)
- A substance that accepts and H+ from water is considered a base. Both NH3 and H2O are amphoteric (they have H atoms that can be donated as H+ ions and thus act as acids and lone-pair electrons that can accept an H+ and thus act as bases). Thus, either NH3 or H2O can act as an acid or a base.
- Identify each salt as acidic, basic, or neutral. The ions from KCl derive from a strong acid (HCl) and a strong base (KOH). Therefore, neither ion will affect the acidity of the solution, so KCl is a neutral salt. Although the K + ion derives from a strong base (KOH), the NO 2 − ion derives from a weak acid (HNO 2).
- Salt of weak acid and strong base: CH3COONa is a salt of weak acid CH3COOH and strong base NaOH. When it is dissolved in water it dissociates completely. ions of water get trapped and the pH of solution increases. Salt of weak acid and weak base: CH3COONH4 is a salt of weak acid CH3COOH and weak base NH4OH.
Some common strong Arrhenius bases include:
- Potassium hydroxide (KOH)
- Sodium hydroxide (NaOH)
- Barium hydroxide (Ba(OH)2)
- Caesium hydroxide (CsOH)
- Strontium hydroxide (Sr(OH)2)
- Calcium hydroxide (Ca(OH)2)
- Lithium hydroxide (LiOH)
- Rubidium hydroxide (RbOH)
- In technical words, the acid which dissociates completely into H+ ions in water will have the lowest pH value, while the base dissociates completely into OH- ions in water will have the highest pH value. EDIT : Strongest acid has pH of 1 while strongest base has pH of 14. (0 - 6.99 are acids. 7 is neutral.
- A strong electrolyte is a solution/solute that completely, or almost completely, ionizes or dissociates in a solution. These ions are good conductors of electric current in the solution. Strong acids, strong bases and soluble ionic salts that are not weak acids or weak bases are strong electrolytes.
- A molecule of water will sometimes donate a proton to a neighboring molecule. This results in an OH- and a H3O+ the hydroxide ion is basic and the hydronium ion is acid. as you know it is called amphoteric, can act as both an acid and a base. It Is neutral, being in the absolute middle at #7 on a ph scale.
Strong and Weak Acids/Bases A strong acid is an acid which dissociates completely in water. That is, all the acid molecules break up into ions and solvate (attach) to water molecules. Therefore, the concentration of hydronium ions in a strong acid solution is equal to the concentration of the acid.
- Lets take a look at acids - A strong acid (HCl) vs a weak acid (CH3COOH). A strong acid will fully dissociate in water to form H+ ions. This reaction is non-reversible. After dissolution, only a very very minute concentration of HCl itself remains in the solution, as most of the diluted HCl has dissolved into ions.
- A strong base is a compound that will completely ionise into metal and hydroxide ions when in solution. Conversely, a weak base only partially ionises to metal and hydroxide ions in solution. The primary difference between a weak base and a strong base is the base's ability to accept a hydroxide ion when in solution.
- Table of Strong Bases
Name Formula Ionization sodium hydroxide NaOH Na+(aq) + OH–(aq) potassium hydroxide KOH K+(aq) + OH–(aq) lithium hydroxide LiOH Li+(aq) + OH–(aq) rubidium hydroxide RbOH Rb+(aq) + OH–(aq)
Updated: 2nd October 2019