Home
Class 12
CHEMISTRY
What weight of sodium hydroxide should b...

What weight of sodium hydroxide should be dissolved to prepare 250 ml of 0.2 M solution ?

A

2g

B

8g

C

60g

D

4g

Text Solution

Verified by Experts

The correct Answer is:
A
Molarity `= ("Wt. of NaOH"xx1000)/("Mol. wt." xx "Volume")`
`=0.2= ("Wt. of NaOH" xx 1000)/(40xx250)`
or Wt. of NaOH `= (0.2xx40xx250)/(1000)=2 g`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-I) (Basic conceptual Qs) (Solubility, Vapour Pressure, Raoult.s Law, Ideal and Non-ideal Solutions)|15 Videos

  • SOLUTIONS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-I) (Basic conceptual Qs) (Colligative Properties)|38 Videos

  • REDOX REACTIONS

    MODERN PUBLICATION|Exercise Recent Examination Questions|6 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTION|15 Videos

Similar Questions

Explore conceptually related problems

The weight of (COOH)_(2). 2H_(2)O needed to prepare 500 cm^(3) of 0.1 M solution is :

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) ? The concentrated acid is 70% HNO_(3) .

The weight of calcium hydroxide, Ca(OH)_(2) in 100 ml of 0.01 M solution will be (At. Mass of Ca=40 )

The amount of KMnO_4 required to prepare 100 ml of 0.1 N solution in alkaline medium

The volume of 0.1 M H_2SO_4 required to neutralise 50 ml of 0.2 M NaOH solution is

What is the molarity and molality of a 13% solution (by weight) of sulphric acid with a density of 1.02gmL^(-1) ? To what volume should 100 mL of this acid be diluted in order to preapre a 1.5 N solution?

What volume of a solution of hydrochloric acid containing 73 g acid per litre would suffice for the exact neutralisation of sodium hydroxide obtained by allowing 0.46 g of metallic sodium to act upon water.

How many grams of CH_(3)OH should be added to water to prepare 150 ml solution of 2.0 M CH_(3)OH ?

Calculate the mass of hydrochloric acid in 200 cm^(3) of 0.2 N solution of it. What volume of this acid solution will react exactly with 25 cm^(3) of 0.14 N solution of sodium hydroxide?