NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions
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Question : 12
Total: 36
If the density of methanol is 0.793 k g L – 1
Solution:
Moles of methanol present in 2.5 L of 0.25 M solution
Molarity =
∴ Moles ofC H 3 O H
∴ Mass ofC H 3 O H
[∴ Molecular mass ofC H 3 O H
∴ 0.793 ×10 3 C H 3 O H
∴ 20 g ofC H 3 O H
Molarity =
∴ Moles of
∴ Mass of
[∴ Molecular mass of
∴ 0.793 ×
∴ 20 g of
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