# Q. Which cleansing agent gets precipitated in hard water?

KCET KCET 2019Chemistry in Everyday Life

Solution:

## $2C_{17} H_{35}COONa+CaCI_{2} \to2 NaCI+$ $\underset{\text{insoluble calcium stearate (soap)}}{\ce{$\left(C_{17}H_{35}COO\right)_{2} Ca$}}$

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