how will you measure salt?
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how will you measure salt?
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Answer:
An instrument that measures salt content is called a salt meter.
There are a few kinds of salt meters that differ in their measurement principles and methods.
1) The Mohr method / silver nitrate titration measures the amount of chlorine (the Cl in NaCl).
2) The ion electrode method measures the amount of sodium (the Na in NaCl) to ascertain the salt concentration.
3) The electrical conductivity method uses the fact that salt (NaCl) can conduct more electricity than other substances to ascertain the salt concentration by measuring the electrical conductivity.
4) The refractometer method uses the fact that the refractive index increases with solubility in an aqueous solution to measure the salt concentration by measuring the refractive index.