Question

calculate the required amount of water to prepare 5% of caustic soda solution ​

Answer 1

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Normally, solution percentages are defined as weight(solute)/weight(solution) or weight(solute)/volume(solution).

So 60% NaOH solution should be 60g NaOH and 40g H20 (if w/w) or filling up 60g NaOH with water until you reach a total volume of 100mL (if w/v).

Answer 2

100ml of water is required to make the 5% solution for the caustic sofa.

Given,

Percentage of caustic soda solution= 5%

To Find,

The necessary amount of water to prepare a 5% of caustic soda solution.

Solution,

We can solve the given issue in a succeeding manner:

Now,

Mass by volume percentage relates to the mass of solute in grams present in 100ml of solution.

Mass% =

$\frac{w}{v} \times 100$

Thus, from the Mass by Volume percentage theory we can say that 5% NaOH solution (W/V) means 5g of NaOH dissolved in 100ml of water.

Hence, 100ml of water is required to make the 5% solution for the caustic sofa.