Chemistry
State how acids are defined as per Arrhenius's and Lowry – Bronsted's theory.
Answer
Arrhenius Theory — Acids are substances which dissociate in aqueous solution to give H+ ions.
Strong acids dissociate almost completely, while weak acids dissociate partially.
Lowry – Bronsted's theory — Acids are proton donors and bases are proton acceptors [proton = H+].
HCl [aq.] ⟶ H+ + Cl- [acid - proton donors]
NH3 + H+ ⟶ NH4+ [bases - proton acceptors]
Related Questions
State why the basicity of acetic acid is one and acidity of calcium hydroxide is two.
Oxygen atom in water has two 'lone pair of electrons'. Explain the meaning of the term in italics. With the help of an electron dot diagram show the formation of hydronium ion and ammonium ion from a water molecule and an ammonia molecule respectively.
State how you would obtain:
- Sulphuric acid from an acidic oxide
- KOH from a basic oxide.
Give three reasons with equations wherever required, why Sulphuric acid is a dibasic acid.