0

Guest

Courses New
  • Forum
  • AIPMT
  • This question belongs to physical chem-...

This question belongs to physical chem- SOLUTIONS. How many grams of conc. nitric acid solution should be used to prepare 250ml of 2.0 M HNO3? 54.0 conc. HNO3 45.0 conc. HNO3 90.0 conc. HNO3 70.0 conc. HNO3

This question belongs to physical chem- SOLUTIONS.
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

Grade:12th pass

1 Answers

Arun
25750 Points
6 years ago
I am solving it for 70% concentrated HNO3.
The required number of moles=( 250/1000)×2
=0.5 moles
(no. of moles=molarity × volume)
so,required mass of HNO3=0.5×63
=31.5 grams
(given mass=no. of moles × 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)×31.5 grams of solution.
so amount of concentrated nitric acid solution used is 45 grams.

Think You Can Provide A Better Answer ?

Other Related Questions on AIPMT

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More