Can you walk me through this problem?
2007-06-05 06:29:27 · 9 answers · asked by ♥chloe♥ 2 in Science & Mathematics ➔ Chemistry
Ca(OH)2 is calcium hydroxide, which is an alkali.
HCl is hydrochloric acid, which is (as the name suggests), an acid.
When you react an acid with an alkali, you'll always get a salt (a metal bonded ionically with a non-metal, or non-metal compount) and water. This is called a neutralisation reaction.
Firstly, identify the salt. The metal will come from the alkali (calcium, from the calcium hydroxide), and the non-metal from the acid (chloride, from the hydrochloric acid). Write the completed equation as we know it so far.
Ca(OH)2 + HCl --> CaCl2 + H2O
(Calcium is Ca2+ and chloride is Cl- so we'll need two Cl- s to make calcium chloride).
At the moment, the equation doesn't balance. There are twice as many Cl atoms on the right as on the left, so we need to include a 2 in front of the HCl. Rewriting:
Ca(OH)2 + 2HCl --> CaCl2 + H2O
We now have four hydrogens on the left, and only two on the right. At the same time, we have two oxygens on the left, and one on the right. We need a 2 in front of the H2O...
Ca(OH)2 + 2 HCl --> CaCl2 + 2 H2O
2007-06-05 06:38:34 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Ca(OH)2+2HCl--->CaCl2+2H20. The positive ions change the place with each other. In this case it is OH- and Cl-. The easiest way to balance the rest of the equation is to start with the first element and work you way through making sure that there are the same number of molecules on each side of the equation. The atoms are represented by Ca or OH.
Check out this web site for in depth details.
http://richardbowles.tripod.com/chemistry/balance.htm#part3
2007-06-05 06:42:11 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Ca(OH)2 + 2 HCl --> CaCl2 + 2 H2O
2007-06-05 06:48:53 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋
Depending on what level chemistry you are on the answer may differ.
Beginning levels of chemistry (which I would suspect you are in) would say:
CaCl2 + 2 H2O
However, if I am mistaken and you are in a College Chemistry class, then the proper Net-Ionic equation would result in:
2 OH + H+ --> 2 H2O.
But if thats not what you're looking for, refer to the first one.
2007-06-05 07:25:15 · answer #4 · answered by Josh A 1 · 0⤊ 1⤋
Hi! 2HCl + CaCO3 --> CaCl2 + H2O + CO2 Remember that a carbonate will always form carbon dioxide gas! :D
2016-05-17 10:01:29 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Ask a close friend if you need help with the problem if she/he doesn't know,ask your teacher to walk you through an example problem which will help you out with this problem.
2007-06-05 06:33:59 · answer #6 · answered by J 2 · 1⤊ 1⤋
Yea this is easy you should learn how to do this yourself but i'll give you the answer so that I feel smart.
Ca(OH)2+2HCl ---> CaCl2+2H2O
Damn I'm smart
2007-06-05 06:38:49 · answer #7 · answered by Kyle M 2 · 0⤊ 2⤋
Go to the math lab at your school. You are not going to learn it by watching people do your problems over and over again. DO YOUR OWN HOMEWORK!
2007-06-05 06:32:13 · answer #8 · answered by Matthew A 1 · 1⤊ 1⤋
= RUN DMC. No CLue I was better at BIO.
2007-06-05 06:31:39 · answer #9 · answered by pittpenguins71 4 · 0⤊ 4⤋