NAME
: TLOTITSO
SURNNAME
: MPHOMELA
STUDENT NO
: 202101291
COURSE CODE
: PAC 211
TITTLE
: DETERMINATION OF THE
FORMULA FOR THE
COMPLEX COPPER(II)AMMINE ION
DUE DATE
: 16 MAY 2023
INTRODUCTION
A powdery, light blue precipitate of copper(II) hydroxide forms when concentrated ammonia
solution (ammonium hydroxide) is added to a clear, light blue aqueous solution of copper(II)
chloride. With the addition of more ammonia, the copper ion returns to solution as a deep blue
ammonia complex. The addition of 12M sulfuric acid reverses the changes caused by the
copper hydroxide precipitate, returning the solution to its original clear, light blue colour.
ABSTRACT
RESULTS
• 1 mol/L of ammonia solution.
• 0.1 mol/L solution of copper(II) salt.
• Volumes obtained during experiment
Volume(mol/L)
1^st Titration
2^nd Titration
3^rd Titration
Initial
40 ml
11 ml
16.7 ml
Final
11 ml
16.7 ml
25.1 ml
Total
7 ml
5.7 ml
8.4 ml
CALCULATIONS