How can you know that during the practical session the amount of NaOH you will use to convert Cu 2+ to Cu(OH) 2 will be in excess ?

Question

How can you know that during the practical session the amount of NaOH you will use to convert Cu 2+  to Cu(OH) 2  will be  in excess ?

Answer

Approximately 0.35 mL of 4 M NaOH is required, and 0.5 mL portions are added, thus the NaOH is added in excess

Answer

6 M H 2 SO 4  is added until all the solid has dissolved, which is the equivalent of adding NaOH in excess

Answer

Approximately 3.5 mL of 4 M NaOH is required, but only 0.5 mL is added, thus the NaOH is  not  added in excess

Answer

4 M NaOH is added until the solution reaches an acidic pH, thus the NaOH is added in excess

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