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Experiment 16 involves determining the identity of 6 unknown household products.

ID: 1005673 • Letter: E

Question

Experiment 16 involves determining the identity of 6 unknown household products.

Available tests:

1: Solubility in water
2: pH
3: AgNO3 (aq)
4: PbNO3 (aq)
5: BaCl2 (aq)
6: 1M HCl (aq)
7: 1M NaOH (aq)
8: Iodine
9: Acetic acid (aq)
10: Flame test

Complete the required portions of the table in blue, and any number of additional experiments in yellow, by selecting the corresponding active ingredient for the following household products from set C and match the corresponding result for each selected test.

Before coming to lab: Download and print table. Fill in with the experiments you will be performing and expected results for that test.

Click here to download your Set C Household Product Sheet

Some references include your lab manual, solubility rules from table 9.1, Merck Index or CRC Handbook (available in the Resource Centre).

1.The list of Active ingredient of above 6 compound:

KCl

sucrose

KNO3

ascorbic acid

CaCO3

NaCl

glucose

NaHCO3

Acetyl salicylic acid    

MgSO4

Na2B4O9.H2O

NaOH

Cornstarch

2.The option of Solubility in water:

souble

insouble

3.The option of PH

pH=3 to 6; acidic

pH=7; neutral

pH=8 to 11; basic

pH>11; basic

4.The options of Yellow cube:

white ppt

no ppt

Solubility in water 1M HCI (aq) AgNO3 (aq) pbNO3 (aq) BaCI2 (aq) 1M NaOH (aq) Compound Rolaids Cornstarch Borax Salt Vitamin C Sugar Active ingredient pH Iodine Tries 4/99 . Tries 1/3 t Tries 1/3 Tries 0/3 Tries 1/3 Tries 0/3 Tries 0/99 . Tries 0/99E ! Tries 0/99 Tries 0 99D Tries 0/99 Tries O/99L Tries 4/99 Tries 0/99 |Tries O/991 Tries 0/99 Tries 0/99 : st st

Explanation / Answer

Compound

Active Ingredient

Solubility in water

pH

AgNO3 (aq)

PbNO3 (aq)

BaCl2 (aq)

1 (M) HCl (aq)

1 M NaOH (aq)

Iodine

Rolaids

CaCO3

Insoluble

8-11; basic

White ppt

White ppt

White ppt

No ppt

White ppt

No ppt

Cornstarch

Cornstarch

Insoluble

3-6; acidic

No ppt

No ppt

No ppt

No ppt

No ppt

Blue-black colour

Borax

Na2B4O9.H2O

Soluble

8-11; basic

No ppt

White ppt

White ppt

No ppt

No ppt

No ppt

Salt

NaCl

Soluble

7; neutral

White ppt

White ppt

No ppt

No ppt

No ppt

No ppt

Vitamin C

Ascorbic acid

Soluble

3-6; acidic

No ppt

No ppt

No ppt

No ppt

No ppt

No ppt

Sugar

Glucose

Soluble

7; neutral

Grey ppt

No ppt

No ppt

No ppt

No ppt

No ppt

Compound

Active Ingredient

Solubility in water

pH

AgNO3 (aq)

PbNO3 (aq)

BaCl2 (aq)

1 (M) HCl (aq)

1 M NaOH (aq)

Iodine

Rolaids

CaCO3

Insoluble

8-11; basic

White ppt

White ppt

White ppt

No ppt

White ppt

No ppt

Cornstarch

Cornstarch

Insoluble

3-6; acidic

No ppt

No ppt

No ppt

No ppt

No ppt

Blue-black colour

Borax

Na2B4O9.H2O

Soluble

8-11; basic

No ppt

White ppt

White ppt

No ppt

No ppt

No ppt

Salt

NaCl

Soluble

7; neutral

White ppt

White ppt

No ppt

No ppt

No ppt

No ppt

Vitamin C

Ascorbic acid

Soluble

3-6; acidic

No ppt

No ppt

No ppt

No ppt

No ppt

No ppt

Sugar

Glucose

Soluble

7; neutral

Grey ppt

No ppt

No ppt

No ppt

No ppt

No ppt

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