Question

how to compare acidic strength and basic strength of compounds

Answer 1

Hey mate .......

here is ur answer......

We can find the acidic strength and basic strength of compounds through indicators like.....


1) The PH scale...

2) Litmus papers...

Other indicators like some solution or turmeric , lichens etc can be used....

The change will indicate the acidic or the basic strength of a compound...

Hope it helps♥♥♥♥

Answer 2

ANSWER--

If you are talking about the organic acids.. just remove the acidic H and check the stability of the formed product by resonance or hyperconjugation or inductive effect. 

for eg, CH3COOH AND HCOOH if we remove the acidic H then the remaining part will be CH3COO- AND HCOO-. here +I effect of the CH3- destabilizes the carbanion CH3COO- therefore it will be less formed as compare to your HCOO-. 
NOTE: both carbanion are stablized via resonance.