CH 221 The specific heat capacity and enthalpy of dissolution Lab Report

The Specific Heat Capacity and Enthalpy of Dissolution

DATA

Part 1: Enthalpy of Dissolution


Table 1: Calculations for determining the Enthalpy of dissolution


Trial Mass (g) Volume Water Tinitial  (⁰C) Tfinal  (⁰C)
(mL)

KNO3 1 2.7674 g 200 mL 25.00⁰C 23.13⁰C


S.S 2 2.4667 g 200 mL 25.00 ⁰C 22.57 ⁰C


3 2.0204 g 200 mL 25.01 ⁰C 23.31 ⁰C




KOH 1 2.4748 g 200 mL 25.00 ⁰C 30.42⁰C


S.S 2 2.5161 g 200 mL 25.01 ⁰C 31.66⁰C


3 2.0379 g 200 mL 25.00 ⁰C 31.08 ⁰C

, Figure 1: Temperature curve for KNO3




Figure 2: Temperature curve for KOH




Part 2: Specific Heat Capacity


Table 2: Calculations for determining the Specific Heat Capacity


Metal Mass Tinitial,metal Tfinal,metal Volume Tinitial,wate Tfinal,water
Metal (g) (⁰C) (⁰C) Water r (⁰C) (⁰C)
(mL)

Zn 18.9416 200 ⁰C 27.87 ⁰C 100 mL 24.99 ⁰C 27.87⁰C
g


Cu 24.7173 g 200 ⁰C 28.79⁰C 100 mL 24.99⁰C 28.79⁰C