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A compund (a) of molecular formula C7H8O...

A compund (a) of molecular formula `C_7H_8O` is insoluble in aqueous sodium hydroxide

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To solve the problem, we need to identify the compound with the molecular formula \( C_7H_8O \) that is insoluble in aqueous sodium hydroxide (NaOH). Here is a step-by-step breakdown of the solution: ### Step 1: Understand the nature of sodium hydroxide Sodium hydroxide (NaOH) is a strong base. It can react with acidic compounds to form salts and water. Therefore, compounds that can donate protons (H+) or have acidic hydrogens will generally be soluble in NaOH. **Hint:** Remember that acids react with bases to form salts and water, leading to solubility in basic solutions. ### Step 2: Identify the possible types of compounds The molecular formula \( C_7H_8O \) suggests that the compound could be an alcohol, phenol, or ether. We need to determine if any of these types of compounds contain acidic hydrogens. **Hint:** Consider the functional groups that might be present in the compound and their acidic properties. ### Step 3: Analyze the acidic nature of phenols and alcohols - **Phenols** have an -OH group attached to an aromatic ring and are known to be weak acids due to the resonance stabilization of their conjugate base. - **Alcohols**, on the other hand, have -OH groups but do not exhibit significant acidity because their conjugate bases are not stabilized by resonance. **Hint:** Recall that phenols can donate protons, while alcohols generally cannot. ### Step 4: Determine the structure of the compound Given the formula \( C_7H_8O \), one possible structure is benzyl alcohol, which has the structure \( C_6H_5CH_2OH \). This is an alcohol and does not have an acidic hydrogen that can react with NaOH. **Hint:** Draw the structure of the compound to visualize its functional groups and determine if it has acidic hydrogens. ### Step 5: Conclude the solubility behavior Since benzyl alcohol (or any alcohol derived from the formula \( C_7H_8O \)) does not have an acidic hydrogen, it will not react with NaOH and thus will be insoluble in aqueous sodium hydroxide. **Hint:** If a compound does not have an acidic hydrogen, it will not be soluble in a strong base like NaOH. ### Final Answer: The compound \( C_7H_8O \) that is insoluble in aqueous sodium hydroxide is likely benzyl alcohol.
To solve the problem, we need to identify the compound with the molecular formula \( C_7H_8O \) that is insoluble in aqueous sodium hydroxide (NaOH). Here is a step-by-step breakdown of the solution: ### Step 1: Understand the nature of sodium hydroxide Sodium hydroxide (NaOH) is a strong base. It can react with acidic compounds to form salts and water. Therefore, compounds that can donate protons (H+) or have acidic hydrogens will generally be soluble in NaOH. **Hint:** Remember that acids react with bases to form salts and water, leading to solubility in basic solutions. ### Step 2: Identify the possible types of compounds ...
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