KCET · Chemistry · Chemistry in Everyday Life
Which cleansing agent gets precipitated in hard water?
- A Cetyl trimethyl ammonium bromide
- B Sodium dodecyl benzene sulphonate
- C Sodium lauryl sulphate
- D Sodium stearate
Answer & Solution
Correct Answer
(D) Sodium stearate
Step-by-step Solution
Detailed explanation
(D)
\( 2 \mathrm{C}_{17} \mathrm{H}_{35} \mathrm{COONa}+\mathrm{CaCl}_{2} \rightarrow 2 \mathrm{NaCl}+\quad\left(\mathrm{C}_{17} \mathrm{H}_{35} \mathrm{COO}\right)_{2} \)
\( 2 \mathrm{C}_{17} \mathrm{H}_{35} \mathrm{COONa}+\mathrm{CaCl}_{2} \rightarrow 2 \mathrm{NaCl}+\quad\left(\mathrm{C}_{17} \mathrm{H}_{35} \mathrm{COO}\right)_{2} \)
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