Categories: Chemistry WAEC

The scum formed when soap is mixed with hard water could be?

A. calcium trioxocarbonate (IV)
B. propane- 1, 2, 3 – triol
C. calcium hydrogentrioxocarbonate (IV)
D. magnesium tetraoxosulphate (IV)
E. calcium stearate

Correct Answer:

Option A – calcium trioxocarbonate (IV)

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