# Objective: To determine the extent of solvolysis of ammonium borate in water by calorimetry.

by subamckenzie (student)

Title : Solvolysis of the Salt of A Weak Acid and A Weak Base

Objective: To determine the extent of solvolysis of ammonium borate in water by calorimetry.

Results:

Part I: 25ml of 1.75M NaOH + 100ml of 0.5M HCl

Initial temperature of NaOH = 27.0

Initial temperature of HCl = 26.0

Table 1:

From the graph of Temperature of mixture against Time,

ΔT1 = 3.5°C

Part II: 25ml of 1.75M NaOH + 100ml of 0.5M H3BO3

Initial temperature of NaOH = 25

Initial temperature of H3BO3 = 25.0

Table 2:

From the graph of Temperature of mixture against Time,

ΔT2 = 3.5°C

Part III: 25ml of 1.75M Ammonia solution + 100ml of 0.5M HCl

Initial temperature of Ammonia solution = 25.0

Initial temperature of HCl = 24.0

Table 3:

From the graph of Temperature of mixture against Time,

ΔT3 = 4.5°C

Part IV: 25ml of 1.75M Ammonia solution + 100ml of 0.5M H3BO3

Initial temperature of Ammonia solution = 25.0

Initial temperature of H3BO3 = 25.0

Table 4:

From the graph of Temperature of mixture against Time,

ΔT4 = 3.0°C

Calculation:

Part I: 25ml of 1.75M NaOH + 100ml of 0.5M HCl

(i)Determination the limiting ...