Question

1. 10 ml Caco3.of strength lg/L requires 8 ml EDTA. 10 ml of water sample requires 6ml of same
EDTA solution. Calculate the total hardness.​

Answer 1

Answer:

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Answer 2

10 ml Caco3.of strength lg/L requires 8 ml EDTA. 10 ml of water sample requires 6ml of same EDTA solution, 450 milligrams of hardness per liter.

• A mineral's hardness, as opposed to how easy it breaks, refers to how resistant it is to scratches.
• Since the strength of a mineral's internal bonds determines its hardness, harder minerals have stronger internal bonds.
• A substance that binds specific metal ions including calcium, magnesium, lead, and iron.
• In addition to helping the body get rid of calcium and lead, it is utilized in medicine to stop blood samples from clotting.
• Additionally, it serves to prevent the development of biofilms by bacteria (thin layer stuck to a surface). Chelating agents fall under this category.

Given:

In one liter of ordinary water,1.5 g of CaCO3 are present.

To find :

The total hardness of Caco3

Solution:

One milliliter of EDTA solution is comparable to 1.5 milligrams of CaCO3 (15/10), and ten milliliters of SHW.

Calculating the hardness of the water

 45 mg of CaCO3 are equal to 30 * 1.5.

450 milligrams of CaCO3 are dissolved in 1000 cc of water.

The water has 450 milligrams of hardness per liter.

Therefore, 10 ml Caco3.of strength lg/L requires 8 ml EDTA. 10 ml of water sample requires 6ml of same EDTA solution, 450 milligrams of hardness per liter.

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