Calculate the volume of chlorine that will be required to displace all the iodine from 300g

| April 16, 2021 | education

Calculate the volume of chlorine that will be required to displace all the iodine from 300g of a 15% potassium iodide solution. Calculate the amount of new salt substance that is formed.

1. Let’s compose the equation of the chemical reaction:

2KI + Cl2 = 2KCl + I2.

2. Find the chemical amount of potassium iodide:

m (KI) = m (solution) * ω (KI) / 100% = 300 g * 15% / 100% = 45 g.

n (KI) = m (KI) / M (KI) = 45 g / 166 g / mol = 0.27 mol.

3. According to the reaction equation, we find the amount of potassium chloride; chlorine, and its deputy volume (Vm – molar volume, constant equal to 22.4 l / mol):

n (KCl) = n (KI) = 0.27 mol.

n (Cl2) = n (KI) / 2 = 0.27 mol / 2 = 0.136 mol.

V (Cl2) = n (Cl2) * Vm = 0.136 mol * 22.4 L / mol = 3.04 L.

Answer: n (KCl) = 0.27 mol; V (Cl2) = 3.04 l.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.