Question

Help setting Up a stoichiometry problem for acids and base?

Answer 1

Ca(OH)2 + 2 HCl yields 2 H2 O + CaCl2

Given: Volume of Base: 27.0 mL of Ca(OH)2
Volume of Acid: 32.40 mL of HCl
Molarity of Acid: 0.185 M HCl

Unknown: Molarity of Base: ? M Ca(OH)2

Answer 2

This is what I know, I'm just having trouble setting it up

Answer 3

@abb0t

Answer 4

@JFraser

Answer 5

Approach this like any other stoichiometry problem.

The general approach follows:

1. Write and balance reaction

2. Convert whats given to moles (acid in this case)

3. Set up molar ratio (moles of species and their respective stoichiometric coefficients), general form of:

\(\sf \dfrac{moles~of~A}{A's~coefficient}=\dfrac{moles~of~B}{B's~coefficient}\)

4. Solve

In this case you need to use the volume and the moles to find the concentration.

You'll need this formula: \(\sf Molarity=\dfrac{moles_{solute}}{L_{solution}}\)

Answer 6

Thank You!!!

Answer 7

no problem !