A 0.1N (NaOH) Sodium Hydroxide Solution refers to a normality concentration of 0.1 N for sodium hydroxide in water. Normality (N) is a measure of concentration equivalent to molarity (M), but it takes into account the reactive capacity of the solute. For sodium hydroxide, which is a strong base and dissociates completely in water, 1 mole of NaOH provides 1 equivalent of hydroxide ions (OH⁻). Therefore, the molarity and normality of NaOH are numerically equal. \n \n \n

Concentration and Preparation of Sodium Hydroxide Solution 0.1N:

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• 0.1 N NaOH means the solution contains 0.1 equivalents of NaOH per liter of solution.
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• Since 1 N NaOH corresponds to 1 mole of NaOH per liter, a 0.1 N NaOH solution will have 0.1 moles of NaOH per liter.
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To prepare 0.1 N NaOH:

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• The molecular weight of NaOH: is 40 g/mol.
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• The amount required for 1 liter of 0.1 N solution:$$\text{Amount of NaOH (g)}=\text{Normality (N)}\times \text{Equivalent weight of NaOH (g/equiv)}\times \text{Volume (L)}$$Since 1 mole of NaOH is 1 equivalent (because NaOH dissociates to give 1 OH⁻ ion), the equivalent weight of NaOH is 40 g/eq.So, for 1 liter of a 0.1 N NaOH solution: \n \n$$\text{Amount of NaOH}=0.1\times 40\times 1=4\text{ grams of NaOH}$$
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• Steps for preparation: \n
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  1. Weigh 4 grams of solid sodium hydroxide (NaOH).
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  2. Add the NaOH to a beaker containing a small amount of distilled water.
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  3. Stir the solution carefully to ensure the NaOH dissolves completely (NaOH is highly exothermic when dissolving in water, so do this slowly).
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  4. Transfer the solution to a 1-liter volumetric flask, and dilute it with distilled water to the 1-liter mark.
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  5. Mix thoroughly.
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Usage of 0.1 N Sodium Hydroxide Solution:

\nA 0.1 N NaOH solution is commonly used in laboratory settings for: \n

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• Titrations (such as acid-base titrations) to neutralize acids.
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• Standardization of other solutions.
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• Buffer solutions: To adjust pH in various chemical reactions and processes.
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Safety Considerations:

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• Corrosive: NaOH is caustic and can cause severe burns upon contact with skin or eyes.
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• Handling: Always wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat.
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• Storage: Store NaOH solution in tightly sealed containers to prevent absorption of CO₂ from the air, which can convert NaOH to sodium carbonate (Na₂CO₃).
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Note on Normality vs Molarity:

\nFor sodium hydroxide, normality (N) is the same as molarity (M) because each molecule of NaOH provides one hydroxide ion (OH⁻). Therefore, a 0.1 N NaOH solution also has a concentration of 0.1 M NaOH. \n

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• We can’t send the liquid product through a courier service.
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• এই পণ্যটি কুরিয়ারে পাঠানো হয় না।
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• Sodium Hydroxide Solution
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• Pack Size: 500mL
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• c(NaOH) = 0.1 mol/l (0.1 N)
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• We can’t send the liquid product through a courier service.
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• এই পণ্যটি কুরিয়ারে পাঠানো হয় না।
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