87-Calor-Probs

87-Calor-Probs - CALORIMETRY GCHEM I LAB CONCEPT PROBLEMS H...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CALORIMETRY GCHEM I LAB CONCEPT PROBLEMS H reaction (J/mole) = Q reaction (J) / reactant (moles) Q reaction (J) = Qsolution (J) Q solution (J) = Q released/absorbed by reaction + Q calorimeter lost/gain Q released/absorbed by reaction = [mass] [specific heat] [ T] Q calorimeter lost/gained = [C] [ T] T ( o C) = Temperature (final) – Temperature (initial) ( sign is important) Specific Heat = Constant Mass Solution = Mass solution in calorimeter (added masses or use density) 1) A solution containing 100.00 grams of water and 6.72 grams of KNO 3 was placed in a calorimeter. The specific heat of the solution was 3.698 joules/gram – o C and the temperature decreased from 19.79-16.41 o C. If calorimeter constant is 82.5 J/ o C, what is heat released/gained by the reaction and heat lost/gained the calorimeter ? 2) In a calorimeter 50.0 mls of 1.100 M AgNO 3 and 100.0 mls of 0 1.100 M KCl with a total mass of 180.0 grams are mixed to yield AgCl (s). The reaction increased the temperature in the calorimeter increased from
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 07/28/2011 for the course CHM 2045 taught by Professor Eng during the Spring '10 term at UNF.

Page1 / 2

87-Calor-Probs - CALORIMETRY GCHEM I LAB CONCEPT PROBLEMS H...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online