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20 April, 20:51

Is the polar head of a soap molecule more attracted to calcium or sodium ions?

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  1. 20 April, 23:13
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    The polar head of a soap molecule would be more attracted to calcium ions than that of sodiu ions. Sodium ions has a positive charge only. It has a + 1 charge. While, calcium ion carries a double positive or a + 2 charge. So, the negative charged polar part of a soap molecule would be more attracted to the double positive charge than a positive charge only. This is true for a magnesium ion also since it also has a double positive charge. Soap molecules has properties for both polar and non-polar which can be found at the end of a molecule. When it is in water, it forms micellar structure where the polar end would be facing or attracted to water while the non-polar end would move away from the water.
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