March 5, 2015

Homework Help: chemistry

Posted by Mallory on Saturday, March 3, 2007 at 2:35pm.

Hi! i'm kinda having trouble getting this.. Don't understand it really


Ca(OH)2 + 2HCl-----> CaCl2 + 2H2O

How do i calculate Ca+?

:You need much more information.
1) do you mean the concentration of Ca+ ion?
2) is there excess HCl? What is given?


It was from a titration/ stoichiometry lab i did

it was between 0.05 mol/dm^3 HCl and saturated Ca(OH)2

The Ca(0H)2 volumes used were

23.39, 22.49 and 20.78

What was the volume of the HCl?

How did you "titrate". At what point did the "titration" end?

the volume of the HCL was 20cm^3

the HCL was titrated against the Ca(OH)2.. we were determining the solubilty product of Ca(OH)2.

WE did the experiment 3 times
and these were the readings for the volumes of the Ca(OH)2 used

23.39, 22.49, 20.78

Ok. You know the moles of HCl used (concentration x volume) watch units.
There fore, the balanced equation tells you how many moles of Ca(OH)2 were used, so the concentration of the Ca+ ion is that number of moles /volume of total water solution (acid solution and acid solution)

check my thinking, I am not certain of your setup and procedure.

Answer this Question

First Name:
School Subject:

Related Questions

Chemistry - A sample of ca(oh)2 is allowed to stand in distilled water until a ...
chemistry - A 0.972g sample of a CaCl2*2H2O/K2C2O4*H2O solid salt mixture is ...
Chemistry - which equation represents an oxidation-reduction reaction? 1.HCl+KOH...
Chemistry - A .972g sample of a Cacl2 2H2O/K2C2O4 H2O solid salt mixture is ...
speech/english - this is kinda similar to last nights question We have to write ...
Chemistry - How many milliters of 1.80M HCl are required to react with 30.0 ...
Chemistry - Consider the following chemical reaction 2HCL+ Ca(OH)2 CaCl2+2H2O ...
Chemistry - Is this equation balanced? 2HCl(aq) + Ca(OH)2(aq) -------> 2H2O...
chemistry - Calculate the solubility of Cacl2 in g/L based on the experiement. ...
speech/english - this is kinda similar to last nights question We have to write ...