Arrange the following in the decresing order of acidic strength :
(a) `H_2 O , CH_3 OH , C_6 H_5 ,OH ,CH _2 COOH`
`(b) CH_3 CH_2 COOH ,HOCH, C_6 H_5COOH ,ClCH_2 COOH `

Explanation

To arrange the given compounds in decreasing order of acidic strength, we need to analyze the stability of the conjugate bases formed after the donation of a proton (H⁺) from each compound. The more stable the conjugate base, the stronger the acid.

### Part (a): Compounds: H₂O, CH₃OH, C₆H₅OH, CH₂COOH

1. **Identify the Compounds**:
- H₂O (water)
- CH₃OH (methanol)
- C₆H₅OH (phenol)
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