Explain with an example that strong acids have very weak conjugate bases and a strong base have a very weak conjugate acid.

(d) : Given that pKa = 4.8 and pKb = 4.78 Therefore,  pH = 7 + 1/2 (pK a – pKb ) = 7 + 1/2 (4.80 – 4.78) = 7.01

F- ,HSO4 - ,CO3 2- and NH3

NH2- , NH3 and HCOO-

Conjugate acid is H2CO3 a conjugate acid is CO3 2- 

These differ from each other by proton. Acid ----------> Conjugate base + proton  Base ------------> Conjugate acid+ proton

 P= weak base , Q=Strong acid, R=weak acid S= strong base , T= Strong acid , U=strong base

If (A) is correct but (R) is wrong

(a)Monobasic and a weak Lewis acid

Acids which ionize completely in aqueous solution-strong acids. Acids which ionize partially in aqueous solution-weak acids Hydrochloric acid, nitric acid-strong acid Acetic acid, formic acid-weak acid

(i) The acids which are obtained from plants and animals are called organic acids. Citric acid is obtained from the lemon. Vinegar contains acetic acid. (ii) Concentrated acids are very hot when they...