Question

The formula for table salt is NaCl. According to the law of definite proportions, this means that the formula for table salt _____.

a) can also be NaCl2
b) is always NaCl
c) must contain Na and Cl in some proportion
d) is likely to be NaCl in most cases

I'm torn between B and C

Answer 1

Hmm.. A colorless or white crystalline compound, NaCl, soluble in water and very slightly soluble in ethanol. It occurs as the mineral halite (rock salt) and in natural brines and sea water. It has the interesting property of a solubility in water that changes very little with temperature. It is used industrially as the starting point for a range of sodium-based products (e.g. Solvay process for Na2CO3, Castner-Kellner process for NaOH), and is known universally as a preservative and seasoner of foods. Sodium chloride has a key role in biological systems in maintaining electrolyte balances.

So what the Answer ?


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