Amordant is a substance that combines with a dye to produced a stable fixed colour in a dyed fabric. calcium acetate is used as a mordant. it is prepared by the reaction of acetic acid with calcium hydroxide.
2ch3co2h + ca(oh)2 ? ca(ch3co2)2 + 2h2o
what mass of ca(oh)2 is required to react with acetic acid in 25.0 ml of a solution having a density of 1.065 g/ ml and containing 58.0% acetic acid by mass?

Answer : The mass of required is 9.3092 grams.

Explanation :

First we have to calculate the mass of solution.

Now we have to calculate the mass of acetic acid.

As we are given that the 58.0 % acetic acid by mass. That means, 58.0 grams of acetic acid present in 100 grams of solution.

As, 100 g of solution contains 58.0 g of acetic acid

So, 26.625 g of solution contains of acetic acid

Now we have to calculate the moles of acetic acid.

Molar mass of acetic acid = 60 g/mole

Now we have to calculate the moles of .

The balanced chemical reaction is,

From the balanced reaction we conclude that,

As, 2 moles of react with 1 moles of

So, 0.257 moles of react with moles of

Now we have to calculate the mass of .

Molar mass of = 74 g/mole

Therefore, the mass of required is 9.3092 grams.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.