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Check out the Preparation Of 2/3N Sulfuric Acid (H2So4)

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Hey, good to see you here :-d …… In this article, we’re gonna discuss the Preparation of 2/3N Sulfuric Acid (H2SO4)….. If you have any queries, don’t forget to mention in comments….. Thanks

A solution is a homogeneous mixture composed of only one phase. In such a mixture, a solute is a substance dissolved in another substance called as the solvent. The concentration of a solute in a solution is a measure of how much of that solute is dissolved in a solvent.



Standard solutions are those in which the exact amount of a substance presents in a definite volume of solution. To prepare the standard solution, a known weight of solute is measured on a well-calibrated weighing scale and then dissolved in a solvent (usually distilled water) to make up a specific volume.

Normality (N) is one of the commonly used units that determine the concentration of the solution that expresses the gram equivalent weight of solute per liter of the solution. In other words, Normality is simply the number of active grams of a solute per liter of the solution.

The Apparatus Required for the preparation of Sulfuric acid solution in laboratory…..

  • Measuring cylinder
  • Volumetric flask / Beaker
  • Stirrer

Chemicals Required…..

  • Distilled water
  • Concentrated H2SO4 (97%)

Calculations For 2/3 N Sulfuric Acid Solution…..

Molecular weight of H2SO4 = (2×1) + 32 + (4×16) = 2 + 32 + 64 = 98 gm

N = [Weight / Equivalent weight] × [1000 / Volume (in ml)]

2/3 = [X/98/2] × [1000/500]

X = 1/3 × 49 = 16.3 gm

X = 16.3 gms

Conversion of grams into volume (ml) –

 Volume of acid needed = Grams of acid / (Concentration of acid + Specific gravity)

Specific gravity of H2SO4 = 1.94

Concentration of the acid = 97%

Volume of the acid needed to make 500 ml of 2/3 N H2SO4

(16.3 / 0.97) + 1.94 = 8.7 ml

Thus, 8.7 ml of 97% H2SO4 should be added to the 491.3 ml of Distilled water to make the 500 ml of 2/3 N H2SO4 Solution.

The Procedure For the preparation of  2/3 N Sulfuric Acid Solution…..

 Take measuring cylinder and measure 8.7 ml of H2SO4 [sulfuric acid (97%)].




 Take 250 ml of Distilled water in the Beaker or Volumetric flask.

 Now add 8.7 ml of the H2SO4 slowly in the flask having distilled water.

 Mix well using a stirrer (if you are making the solution in the beaker) or by swirling (in case you are making the solution in the volumetric flask).

 Make the final volume 500 ml by adding the distilled water.

 Mix well by stirring (in case of the beaker) or swirling (in case of the volumetric flask).

Precautions To Be Taken While Preparing Sulfuric Acid Solution…..

 Measure accurately the 8.7 ml of 97% concentrated sulfuric acid.

 Always add acid to water and never water to the acid as dilution of acid is a highly exothermic reaction.

 Work near a running supply of water. If the acid contacts the skin, it must be washed off rapidly with the copious amount of tap water.

 Concentrated H2SO4 is highly corrosive so handle with care.



Frequently Asked Questions (FAQs)

Q1. How do you make 2 3 N sulphuric acid?

It is unclear what is meant by “2 3 N” sulphuric acid. It is possible that this is a typographical error, and the intended concentration is either 2N or 3N. In either case, the general method for preparing a specific normality of sulphuric acid involves determining the amount of acid needed to achieve the desired concentration, and then diluting it to the desired volume with water.

Q2. What is 2.5 moles of H2SO4?

2.5 moles of H2SO4 is a measure of the amount of the acid. It is calculated by multiplying the molarity (or normality, if specified) by the volume of the solution in liters. Without knowing the volume of the solution, it is not possible to determine the molarity or normality of the solution.

Q3. How do you prepare 2N H2SO4 in 500ml?

To prepare 2N H2SO4 in 500ml, you would need to measure out the appropriate amount of concentrated sulphuric acid (98% H2SO4) needed to achieve the desired normality. Moles of H2SO4 = normality × volume (in liters)

Once the moles of H2SO4 are determined, the required volume of concentrated acid can be calculated based on its known concentration (usually provided by the supplier). The concentrated acid should be added to a suitable container (such as a volumetric flask) and then diluted with water to a total volume of 500ml.

Q4. What is the volume of 2N H2SO4 solution?

The volume of a 2N H2SO4 solution cannot be determined without additional information. The volume of the solution depends on the amount of acid used to prepare it, as well as the concentration of the starting acid and the final desired concentration.

Q5. How do you make 2N H2SO4 in 250ml?

To make 2N H2SO4 in 250ml, you would follow a similar process as described in A3. The amount of concentrated H2SO4 required would be calculated based on the desired normality and volume of the final solution. This amount of acid would be added to a suitable container and diluted to a total volume of 250ml with water.

Q6. What is the molarity of a 2.5 N H2SO4 solution?

The molarity of a 2.5N H2SO4 solution cannot be determined without additional information. Normality and molarity are related, but different units of concentration. The molarity of a solution depends on its density, which can vary depending on factors such as temperature and concentration.

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