Question 1 A solution of F is prepared by dissolving 0 0712 0 0005 g ...

Question 1: A solution of Fâ€“ is prepared by dissolving 0.0712 Â± 0.0005 g of NaF...

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Chemistry

Question 1: A solution of Fâ€“ is prepared by dissolving 0.0712 Â±0.0005 g of NaF (molecular weight = 41.989 Â± 0.001 g/mol) in 164.00Â± 0.07 mL of water. Calculate the concentration of Fâ€“ in solutionand its absolute uncertainty.
Question 20. A solution of HNO3 is standardized by reaction withpure sodium carbonate.
A volume of 27.64 Â± 0.05 mL of HNO3 solution was required forcomplete reaction with 0.9875 Â± 0.0009 g of Na2CO3, (FM 105.988 Â±0.001). Find the molarity of the HNO3 and its absoluteuncertainty.

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3.6 Ratings (516 Votes)

1 The concentration of NaF Mass of NaF X 1000 Molecular weight of NaF X volume of water concentration of NaF 00712 X 1000 41989 X 164 0013 M Now uncertainities in multiplication and division will propagate as relative uncertainity in concentration relative uncertainity in mass2 See Answer

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