What is the mass of NaOH required to make 500 ml of 0.5M aqueous solution.
Answers
Answered by
2
M= n/V
0.5M= w/molar mass/ 0.5L
0.5 x 0.5 = w/40
0.25 x 40 = w
w= 10 g
adarshmohan132:
india
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oh thats my mistake ,to ask that type of question
forgive me
but you can give me the answer
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ok fine
Answered by
4
Given :
Volume of aqueous solution =500ml =0.5L
Molarity= 0.5 M
To find: Mass of NaOH(solute)=?
Formula :
Molarity =No.of moles/Volume of solution
Solution:
No of moles=Molarity x Volume of solution
No of moles= 0.5 x 0.5
No of moles= 0.25 kg
No of moles =Mass of solute/Molar mass
Mass of solute =0.25 x 10
Mass of solute = 10 kg
Hope that it will help you.
Volume of aqueous solution =500ml =0.5L
Molarity= 0.5 M
To find: Mass of NaOH(solute)=?
Formula :
Molarity =No.of moles/Volume of solution
Solution:
No of moles=Molarity x Volume of solution
No of moles= 0.5 x 0.5
No of moles= 0.25 kg
No of moles =Mass of solute/Molar mass
Mass of solute =0.25 x 10
Mass of solute = 10 kg
Hope that it will help you.
molarity is no. of moles/ volume of sol.
oh sorry
that's absolutely fine
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