Question

prepare 250 ml of m/20 standard solution of sodium carbonate with the help of it find molarity and strength of givensolution of hydrocloric acid

Answer 1

Answer:

Explanation:

o of moles of Na  

2

​

CO  

3

​

=  

106

2.65

​

=0.025mol

Molarity =  

250

0.025×1000

​

=0.1M

Dilution Formula

M  

1

​

V  

1

​

=M  

2

​

V  

2

​

 

M  

2

​

=  

V  

2

​

 

M  

1

​

×V  

1

​

 

​

 

M  

2

​

=  

500

0.1×10

​

=0.001

​

V  

1

​

=M  

2

​

V  

2

​

 

M  

2

​

=  

V  

2

​

 

M  

1

​

×V  

1

​

 

​

 

M  

2

​

=  

500

0.1×10

​

=0.002M