calculate the molarity of a solution containing 5g of NaOH in 450ml of solution
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Answered by
23
Molarity = No of moles / volume in litres = n/V
No of moles = Given mass / molar mass
n = 5 /23 + 16 + 1
n = 5/40
n = 1/8 moles
Volume = 450 ml = 450/1000 litres
Molarity = 1/8 / 450 / 1000
= 1 x 1000/8 x 450
= 100 / 45 x 8
= 20/9 x 8
= 10/9 x 4
= 5 / 9 x 2
= 5/18
= 0.27 M
No of moles = Given mass / molar mass
n = 5 /23 + 16 + 1
n = 5/40
n = 1/8 moles
Volume = 450 ml = 450/1000 litres
Molarity = 1/8 / 450 / 1000
= 1 x 1000/8 x 450
= 100 / 45 x 8
= 20/9 x 8
= 10/9 x 4
= 5 / 9 x 2
= 5/18
= 0.27 M
Answered by
2
Answer:
Explanation:
0.277
Sol:NAOH=40 g per mile
No.of moles in 5 g main=5/40=0.125
Volume of a solution=450ml=0.45L
=0.125/0.45
=0.27
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