Question

Fluoride, in the form of sodium silicofluoride (Na2SiF6), is commonly added to municipal drinking water to prevent tooth decay. It is generally added at a level of 1.0 mg/L, but its maximum concentration level (MCL) cannot exceed 4.0 mg/L. You have been assigned to prepare a liter of a standard solution that contains 1.000 mg/L fluoride. a. Which balance in your lab would you use to prepare the solution? Explain why.

Answer 1

BALANCES are the devices which used to measure the weight of the substance.

according to the question , measurement of the sodium silicofluoride is concern for drinking water purpuses so the amount of the substance is under controlled or accurate such as 1.000 mg/l .therefore with the view to there labrotaory balance is required specifically name as Analytical balance .

which measures the substance with the precision value.it measeres the substance in milligram .

types of analytical balances are as follows:

1.Mettler digital analytical balance its ablity to read 0.1 mg.

2.Mechnical analytical balance

3. automated aanalytical balance introduced in 1950 s

mostly in the labs this digital analytical balances are used because of the precision and no errors , it so accuarte due the walls of the balnce is coverd with glass or shafts so no dust particle can enters and disturbs the weight of the substance.and easy to use no complexity in handling.