Find for this reaction as written. (Use 1.0 for the density of the solution and 4.18 as the specific heat capacity.)
When 0.129 of is combined with enough to make 53.8 of solution in a coffee-cup calorimeter, all of the zinc reacts, raising the temperature of the solution from 22.4 to 24.7.
4 answers
You need to provide units in two or three places. You need to provide the reaction to which you refer. Where did the Zn come from?
2 places and Zn + 2HCl -- ZnCl2 + H2
Find delta Hrxn for the reaction
Find delta Hrxn for the reaction
answer in KJ per mol
q = mass H2O x specific heat H2O x (Tfinal-Tinitial)
q/0.129 = heat/gram
(q/0.129)* atomic mass Zn = J/mol
Divide by 1000 to convert to kJ/mol
q/0.129 = heat/gram
(q/0.129)* atomic mass Zn = J/mol
Divide by 1000 to convert to kJ/mol
1 answer