How many grams of conc. nitric acid solution should be used to prepare 250ml of 2.0 M HNO3? (1) 54.0 conc. HNO3 (2) 45.0 conc. HNO3 (3) 90.0 conc. HNO3 (4) 70.0 conc. HNO3

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Arun · Answer

Dear student The required number of moles=( 250/1000)&times;2 =0.5 moles (no. of moles=molarity &times; volume) so,required mass of HNO3=0.5&times;63 =31.5 grams (given mass=no. of moles &times; molar mass) Given, 70 grams of HNO3 are present in 100 grams of the solution so,1 gram will be present in 100/70 grams of solution hence 31.5 grams will be present in (100/70)&times;31.5 grams of solution. so amount of concentrated nitric acid solution used is 45 grams. Regards Arun (askIITians forum expert)

Devesh7 · Answer

i have a doubt , where is it given that 70gm of hno3 is present in 100gm of solution? i am unable to find this.

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How many grams of conc. nitric acid solution should be used to prepare 250ml of 2.0 M HNO3? (1) 54.0 conc. HNO3 (2) 45.0 conc. HNO3 (3) 90.0 conc. HNO3 (4) 70.0 conc. HNO3

How many grams of conc. nitric acid solution should be used to prepare 250ml of 2.0 M HNO3? (1) 54.0 conc. HNO3 (2) 45.0 conc. HNO3 (3) 90.0 conc. HNO3 (4) 70.0 conc. HNO3

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