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Statement-I: Hard water forms scum/precipitate with soap.
Statement-II: If soap is C₁₇H₃₅COONa and hard water contains Ca²⁺, the formation of scum can be shown by the reaction
$2 C_{17} H_{35} COONa + C a^{+} \overset{}{\to} 2 {Na}^{+} + {(C_{17} H_{35} COO)}_{2} Ca ↓$

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Both statement-I and statement-II are correct

Both statement-I and statement-II are incorrect

Statement-I is incorrect and statement-II is correct

Statement-I is correct and statement-II is incorrect

answer is A.

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Detailed Solution

Hard water makes precipitate with soap due to formation of Calcium salts of C₁₇H₃₅COOH

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