Sodium laurylsulphate `[CH_3 (CH_2 )_11 OSO_3Na]` is the more effective detergent than sodium propyl sulphate `[CH_3CH_2CH_2OSO_3Na]` in hard water. W

Question

Sodium laurylsulphate `[CH_3 (CH_2 )_11 OSO_3Na]` is the more effective detergent than sodium propyl sulphate `[CH_3CH_2CH_2OSO_3Na]` in hard water. W

Sodium laurylsulphate `[CH_3 (CH_2 )_11 OSO_3Na]` is the more effective detergent than sodium propyl sulphate `[CH_3CH_2CH_2OSO_3Na]` in hard water. Why?

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

In sodium propyl sulphate `[CH_3CH_2CH_2OSO_3Na]`, the hydrocarbon chain is only three carbon long chain which is not sufficient for the oil and grease to dissolve well. But, the hydrocarbon chain of sodium lauryl sulphate `[CH_3(CH_2 )OSO_3^(-)Na^+]` is long enough for complete dissolution of oil and grease. Therefore, sodium lauryl sulphate `[CH_3(CH_2)_11OSO_3^(-)Na^+]` more effective than sodium propyl sulphate as a detergent in hard water.