The scum formed when soap is mixed with hard wa... - WAEC Chemistry 1992 Question
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)
correct option: a
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