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How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .?
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How many grams of concentrated HNO3 solution should be used to prepare...
Calculation of grams of concentrated HNO3 solution
Given:
Volume of HNO3 solution to be prepared (V) = 250 ml
Concentration of HNO3 solution (C) = 2M
Concentration of concentrated HNO3 solution (c) = 70%
We can use the formula:
C1V1 = C2V2
where
C1 = concentration of concentrated HNO3 solution
V1 = volume of concentrated HNO3 solution
C2 = concentration of final HNO3 solution
V2 = volume of final HNO3 solution
Substituting the values, we get:
C1V1 = C2V2
70% * V1 = 2M * 250 ml
V1 = (2M * 250 ml) / 70%
V1 = 7.14 moles
We need to find the mass of HNO3 in 7.14 moles of concentrated HNO3 solution. The molar mass of HNO3 is 63 g/mol.
Mass of HNO3 = 7.14 moles * 63 g/mol
Mass of HNO3 = 450.42 g
Therefore, the answer is option A) 90 g conc. HNO3.
Explanation:
To prepare 250 ml of 2M HNO3 solution, we need 7.14 moles of HNO3. The concentration of the concentrated HNO3 solution is 70%, which means that there are 70 grams of HNO3 in 100 ml of solution. Using the formula C1V1 = C2V2, we can calculate the volume of concentrated HNO3 solution required to prepare 250 ml of 2M HNO3 solution. Then, by multiplying the volume with the density of the concentrated HNO3 solution, we can find the mass of HNO3 required. Finally, we can convert the mass of HNO3 into grams of concentrated HNO3 solution.
Given:
Volume of HNO3 solution to be prepared (V) = 250 ml
Concentration of HNO3 solution (C) = 2M
Concentration of concentrated HNO3 solution (c) = 70%
We can use the formula:
C1V1 = C2V2
where
C1 = concentration of concentrated HNO3 solution
V1 = volume of concentrated HNO3 solution
C2 = concentration of final HNO3 solution
V2 = volume of final HNO3 solution
Substituting the values, we get:
C1V1 = C2V2
70% * V1 = 2M * 250 ml
V1 = (2M * 250 ml) / 70%
V1 = 7.14 moles
We need to find the mass of HNO3 in 7.14 moles of concentrated HNO3 solution. The molar mass of HNO3 is 63 g/mol.
Mass of HNO3 = 7.14 moles * 63 g/mol
Mass of HNO3 = 450.42 g
Therefore, the answer is option A) 90 g conc. HNO3.
Explanation:
To prepare 250 ml of 2M HNO3 solution, we need 7.14 moles of HNO3. The concentration of the concentrated HNO3 solution is 70%, which means that there are 70 grams of HNO3 in 100 ml of solution. Using the formula C1V1 = C2V2, we can calculate the volume of concentrated HNO3 solution required to prepare 250 ml of 2M HNO3 solution. Then, by multiplying the volume with the density of the concentrated HNO3 solution, we can find the mass of HNO3 required. Finally, we can convert the mass of HNO3 into grams of concentrated HNO3 solution.
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How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .?.
How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many grams of concentrated HNO3 solution should be used to prepare 250 ml of 2M HNO3.The concentration of acid is 70%.options a) 90 g conc. HNO3.b)70 g conc. HNO3.c)45 g conc. HNO3.d)22.05 g conc. HNO3 .?.
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