SATHEE: Solutions Question 168

Solutions Question 168

Question: Which of the following should be done in order to prepare $0.40 M, N a C l$ starting with $100, m l$ of $0.30 M, N a C l$ (mol.wt. of $N a C l = 58.5$ ) [BIT 1992]

Options:

A) Add $0.585, g, N a C l$

B) Add $20, m l$ water

C) Add $0.010 m l, N a C l$

D) Evaporate $10 m l$ water

Show Answer

Answer:

Correct Answer: A

Solution:

100 ml. of 0.30M $= \frac{100 \times 0.3}{1000} = 0.03$ mole of NaCl 100 ml of 0.40M $= \frac{100 \times 0.4}{1000} = 0.04$ mole of NaCl Moles of NaCl to be added $= 0.04 - 0.03 = 0.01, m o l e$ = 0.585 gm

Solutions Question 168

Question: Which of the following should be done in order to prepare $0.40 M, N a C l$ starting with $100, m l$ of $0.30 M, N a C l$ (mol.wt. of $N a C l = 58.5$ ) [BIT 1992]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Solutions Question 168

Question: Which of the following should be done in order to prepare 0.40M,NaCl starting with 100,ml of 0.30M,NaCl (mol.wt. of NaCl=58.5 ) [BIT 1992]

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

Question: Which of the following should be done in order to prepare $0.40 M, N a C l$ starting with $100, m l$ of $0.30 M, N a C l$ (mol.wt. of $N a C l = 58.5$ ) [BIT 1992]