Calculate the molarity of water at 4- C-Given- Density of water at 4 - C-1g mL-1

Since the density of water is given to be 1g mL^ 1 1 mL of water weighs 1 g 1000 mL≈1 L of water weighs 1000 g nbsp; Moles of water=100018 nbsp; ( ...

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Standard XII

Chemistry

Normality

Calculate the...

Question

Calculate the molarity of water at $4^{\circ} C .$
Given: Density of water at $4^{\circ} C = 1 g m L^{- 1}$

55.55

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50.55

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Solution

The correct option is A $55.55$
Since the density of water is given to be $1 g m L^{- 1}$
$1 m L of water weighs 1 g 1000 m L \approx 1 L of water weighs 1000 g$

$Moles of water = \frac{1000}{18}$ $(Molecular mass of H_{2} O = 18 g m o l^{- 1}) .$
$∴ Molarity = Moles of solute dissolved per litre of solution Molarity = \frac{1000}{18 \times 1} m o l L^{- 1} = 55.55 M$

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Normality

Standard XII Chemistry

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Calculate the molarity of water at 4∘C. Given: Density of water at 4∘C=1g mL−1

Calculate the molarity of water at $4^{\circ} C .$
Given: Density of water at $4^{\circ} C = 1 g m L^{- 1}$