If 30.0 ml of ca(oh)2 with an unknown concentration is neutralized by 40.0 ml of 0.175 m hcl, what is the concentration of the ca(oh)2 solution? show all of the work needed to solve this problem. (2 points) ca(oh)2 + 2hcl yields 2h2 o + cacl2

Concentration of Ca(OH)₂:

0.117 M.

Explanation:

How many moles of HCl is consumed?

Note the unit of concentration: moles per liter solution.

.

Convert milliliters to liters.

.

.

How many moles of NaOH in the solution?

Refer to the equation. The coefficient in front of Ca(OH)₂ is 1. The coefficient in front of HCl is 2. In other words, it takes two moles of HCl to neutralize one mole of Ca(OH)₂. That of HCl will neutralize only half that much Ca(OH)₂.

.

What's the concentration of the Ca(OH)₂ solution?

Concentration is the number of moles of solute per unit volume.

.