Geometrical OpticsHard

Question

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3?(70% HNO3 solution taken)

Options

A.

54.0 gm conc. HNO3

B.45.0 gm conc. HNO3
C.90.0 gm conc. HNO3
D.70.0 gm conc. NO3

Solution



W = 31.5 g
70% HNO3 means 70g HNO3 is present in 100g solution.
∴ 31.5g HNO3 will be present in
= 45 g of solution

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