Magnesium solid reacts with aqueous hydrocholoric acid to form Mg2+ ion in solution. In an experiment, 30.0 mL of aqueous HCl was mixed with 0.0671g of magnesium solid in a double styrofoam cup calorimeter. The raction caused the temp. of the substances in the calorimeter to rise 11.0 degrees celcius. Assume the density and specific heat of the HCl solution is that of water, 1.00g/mL and 4.184 J/g deg. C, respectively. The specific heat of Mg is 1.02 J/g deg. C.
Ok. So far I have Mg + HCl ---> Mg2+ but I have no idea where to go from there. I have to write a balanced equation for the reaction and am stuck....
2006-10-23 18:52:31 · 3 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Mg + 2HCl ----> Mg2+(Cl-)2 (subscript) + H2.
An Mg2+ ion has a valency number of 2 but a Cl- ion's valency number is only one (since a single chlorine atom cannot gain more than one electron), hence two Cl- ions are required.
I hope this helps.
2006-10-24 02:28:51 · answer #1 · answered by Robert C 5 · 0⤊ 0⤋
Please undergo in innovations the factor is iron,(Fe) ,no longer iron(II), Fe+2. additionally the reaction between iron and fluorine produce iron(III)fluoride. The equation for this reaction is: 2Fe(s) + 3F2(g) --> 2FeF3 (s)
2016-12-28 03:21:33 · answer #2 · answered by ? 3 · 0⤊ 0⤋
2Mg + HCl --> Mg2+ +HCl... i think..
2006-10-23 19:02:34 · answer #3 · answered by skye 1 · 0⤊ 0⤋