The cost of table salt (NaCl) and table ...

The cost of table salt `(NaCl)` and table sugar `(C_(12)H_(22)O_(11))` are Rs 2 per kg and Rs. 6 per kg respectively. Calculate their cost per mole.

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The correct Answer is:

Salt = 12 p, Sugar = Rs. 2.05 p

1 mole of NaCl = 58.5 g
`therefore" Cost of NaCl per mole"=(2)/(1000)xx58.5"Rs. = 0.117 Re = 11.7 p = 12p."`
1 mole of sugar `(C_(12)H_(22)O_(11))=342g`
`therefore" Cost of sugar per mole"=(6)/(1000)xx342"Rs. = Rs. 2.05 p."`

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