How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO3? The concentrated acid is 70% HNO3.
45.0 g conc. HNO3
90.0 g conc. HNO3
70.0 g conc. HNO3
54.0 g conc. HNO3
A
45.0 g conc. HNO3
B
70.0 g conc. HNO3
C
54.0 g conc. HNO3
D
90.0 g conc. HNO3
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Solution
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The number of moles of nitric acid can be obtained by multiplying the molarity with volume
M×V=Moles of HNO3=250×21000=0.5
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