If 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 mL, what is the molarity of the solution

Question

contestada

Respuesta :

ACCESS MORE ACCESS MORE ACCESS MORE ACCESS MORE

Neetoo Neetoo · Answer 1 · 2020-11-16T09:13:18+01:00

Answer:

Molarity = 0.08 M

Explanation:

Given data:

Mass of ZnCl₂ = 4.89 g

Volume of water = 500 mL (500 mL× 1L/1000 mL= 0.5 L)

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Number of mole ZnCl₂:

Number of moles = mass/molar mass

Number of moles = 4.89 g/ 136.3 g/mol

Number of moles = 0.04 mol

Molarity:

M = 0.04 mol / 0.5 L

M = 0.08 M

samueladesida43 samueladesida43 · Answer 2 · 2021-11-05T12:25:12+01:00

The molarity of the solution if 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 mL is 0.072M.

HOW TO CALCULATE MOLARITY:

The molarity of a solution can be calculated by dividing the number of moles in the solution by its volume. That is;

However, the number of moles of ZnCl2 in the solution need to be calculated as follows:

= 136g/mol

Therefore, the molarity of the solution if 4.89 g of ZnCl2 is dissolved in enough water to give a total volume of 500 mL is 0.072M.

Learn more at: https://brainly.com/question/12127540?referrer=searchResults