The density of 1.85 mass per cent calcium hydroxide solution is 1.025

1.	The density of 1.85 mass per cent calcium hydroxide solution is 1.025 g cm. The volume of 0.1 M HCl solutionswould be required to neutralise 25 mL of this solution is? (Answer is 127.5 ml need explanation)
Answer» GIVEN:- Molarity of HCl SOLUTION = 1M Volume of the solution = 360mL To Find : Mass of calcium hydroxide required to completely NEUTRALIZE this HCl solution. Solution : ■ First of all let's WRITE chemical reaction :- 2HCl+CA(OH)_2 CaCl_2+2H_2O As per chemical reaction, One mole of calcium hydroxide reacts with two moles of hydrochloric ACID solution. • Mass of 1 mole of Ca(OH)₂ : 74g Mass of 2 moles of HCl : 73g ■ Let's find mass of HCl present in the solution. We know that /volume mole molarity = • 1 = mole/0.36 (L)

The density of 1.85 mass per cent calcium hydroxide solution is 1.025 g cm. The volume of 0.1 M HCl solutionswould be required to neutralise 25 mL of this solution is? (Answer is 127.5 ml need explanation)

Answer»

Molarity of HCl SOLUTION = 1M

Volume of the solution = 360mL

To Find :

Mass of calcium hydroxide required to completely NEUTRALIZE this HCl solution.

Solution :

■ First of all let's WRITE chemical reaction :-

2HCl+CA(OH)_2

CaCl_2+2H_2O

As per chemical reaction,

One mole of calcium hydroxide reacts with two moles of hydrochloric ACID solution.

•

Mass of 1 mole of Ca(OH)₂ : 74g

Mass of 2 moles of HCl : 73g

■ Let's find mass of HCl present in the solution.

We know that

/volume

mole

molarity =

• 1 = mole/0.36 (L)