How many grams of concentrated nitric acid solution should be used to prepare 250mL of 2.0M HNO3? The concentrated acid is 70% HNO3. Option 1) 54.0 g conc. HNO3 Option 2) 45.0 g conc. HNO3 Option 3) 90.0 g conc. HNO3 Option 4) 70.0 g conc. HNO3

Moles of $HNO_3$ needed= $\frac{1}{4}\times 2m=\frac{1}{2} mol$

Weigth of $HNO_3$ needed= $63\times \frac{1}{2}= 31.5g$

The given acid is 70 % $HNO_3$

$\therefore wt. required =\frac{31.5}{0.7} = 45g$

Option 1)

54.0 g conc. HNO3

Incorrect

Option 2)

45.0 g conc. HNO3

Correct

Option 3)

90.0 g conc. HNO3

Incorrect

Option 4)

70.0 g conc. HNO3

Incorrect

Preparation Products

JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
Knockout JEE Main April 2021 (Subscription)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 4999/-
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-