Question

Determine the mass flow rates of 4M HCl (sp. gr. 1.04) and 60% HCl to produce 1000 kg 30 points of 35% HCI. Also, include a PFD.

Answer 1

The mass flow rates of 4M HCl and 60% HCl to produce 1000 kg 30% HCl are 5823.36 g and 599819.79 g, respectively.

Step-by-step explanation:

To determine the mass flow rates, we need to calculate the number of moles of HCl in each solution and then convert it to mass. The molar mass of HCl is 36.46 g/mol.

For the 4M HCl:

Molarity = Moles of solute / Volume of solution

4 = Moles of HCl / (1000 kg * 0.04 L/kg)

Moles of HCl = 4 * 1000 * 0.04 = 160 mol

Mass of HCl = Moles of HCl * Molar mass = 160 * 36.46 = 5823.36 g

For the 60% HCl:

Mass of HCl = 1000 kg * 0.6 = 600 kg

Moles of HCl = Mass of HCl / Molar mass = 600000 / 36.46 = 16434.71 mol

Mass of HCl = Moles of HCl * Molar mass = 16434.71 * 36.46 = 599819.79 g

Therefore, the mass flow rates of 4M HCl and 60% HCl to produce 1000 kg 30% HCl are 5823.36 g and 599819.79 g, respectively.