Question

choose strong and weak acids as well as strong and weak bases from the following H2CO3, HNO3, CH3COOH, NaOH, NH4OH, KOH, Ca[OH]2, HCL

Answer 1

strong ACIDS-HNO3,HCL
weak ACIDS-CH3COOH,H2CO3
strong BASE-NAOH,KOH
weak BASE-NH4OH,CA(OH)2

Answer 2

Strong acids are HCl, HNO₃, and weak acids are H₂CO₃ and CH₃COOH.

Strong bases are KOH, NaOH, and weak bases are NH₄OH, Ca(OH)₂.

• Strong acids are those that have a pH range from 0 to 3. These acids easily release H⁺ ions into the solution on dissociation. For example- HCl, HNO₃.
• Strong acid shows complete dissociation of its ions into the solution.
• Weak acids are those that have a pH range from 5 to less than 7. These do not release H⁺ ions easily on dissociation. For example- H₂CO₃, CH₃COOH.
• Weak acid shows partial dissociation of its ions in solution.
• Strong bases are those that release OH⁻ ions very easily into the solution on the complete dissociation and have a pH value between 12 -14. For example- NaOH, KOH.

• Weak bases are those compounds that have a pH range from 7 to 10.
• These do not release -OH⁻ ions easily, as they show partial dissociation into the solution. For example- NH₄OH, Ca(OH)₂.