Chemistry project Ions Present In The Toothpaste And Determine The Quality

 

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Every toothpaste contains the following ingredients: binders, abrasives, subsets, humectants, flavours, sweeteners, fluorides, tooth whiteners, a preservative and water. Binders thicken toothpaste- they prevent separation of the solid and liquid component, especially storage. They also effect the speed and volume of foam production, rate of flavour release and product dispersal, the appearance of toothpaste ribbon on the toothbrush. Some binders are gum solid alginate, methyl cellulose, carrageen and magnesium aluminium silicate

Colour of The Paste- White

Experiment Observation Inference
Take a part of the solution and add MgSO4 solution. Formation of white ppt. CO3 confirmed
Take a part of the solution and add ammonium hydride (1-2 ml) Formation of white ppt.  Ca confirmed
Take a part of solution and add magnesium mixture (mixture of NH­4Cl and NH4OH) Formation of white ppt. PO4 confirmed.
Acidity a portion of aqueous solution  whit dilute HNO3. Boil and cool and add AgNO3. A yellow ppt. is  formed which is insoluble NH4OH I is conformed
Take a small quantity of solution and add oxalic acid Smells like that of vinegar CH3COO absent
Prepare the paste of it with a few drops of water rub and smell.
To one part of the solution and add KI No reaction Pb absent
To one part of the solution  and add solid NH­4Cl and NH4OH is slight excess and then add ammonium phosphate A white ppt is formed Mg present

 

Chemical Reaction

1. CO3 + MgSO4 → MgCO3 + SO4 (white ppt.)

2. CO3 + 2CH3COOH → (CH3COO)2 Ca + H2O
(CH3COO)2Ca + (NH4)2C2O4 → 2CHCOONH4 +CaC2O4

3. NaHPO4 + MgCl2 + NH4OH → Mg (NH4)PO4 + 2NaCl + H2O

4. I+ AgNO3 →NO3+AgI (yellow ppt.)

5. (COOH)2 + 2CH3COONa → NO REACTION

6. Pb + 2KI→ NO REACTION

7. MgCl2 + NH4OH+ (NH3)2HPO4 → Mg (NH4)PO4 + 2NH4 +H2O

Test On Colgate

Colour of Paste- White

Experiment Observation Inference
Take a part of the solution and add MgSO4 solution Formation of white ppt. CO3 confirmed
Take a part of solution and add ammonium hydroxide. Formation of white ppt. PO4 confirmed.
Take a part of solution and add magnesia mixture (mixture of NH2 Cl and NH4OH) and allow to stand Formation of white ppt. PO4 confirmed.
Acidity a portion of aqueous solution with dilute HCl. Boil and cool and add AgNO3. A yellow ppt. is formed which is insoluble NH4Oh I confirmed
Take a small quantity of solution and add oxalic acid Smell like that of vinegar CH3COO absent
Prepare the paste of it with few drops of water rub and smell
Take one part of solution No reaction Pb absent
To one part of the solution and add solid NH4Cland NH4OH in slight excess then add ammonium phosphate. A white ppt. is formed Mg absent

 

IONS PRESENT:- Mg, I, PO4, Ca, CO3

Chemical Reactions

1. CO3 +MgSO4 → MgCO3 + SO4
(white ppt.)

2. CO3 + 2CH3COOH → (CH3COO)2 Ca + H2O
(CH3COO)2Ca + (NH4)2C2O4 → 2CHCOONH4 +CaC2O4

3. NaHPO4 + MgCl2+ NH4OH → Mg (NH4) PO4 + 2NaCl + H2O

4. I+ AgNO3 →NO3 +AgI
(yellow ppt.)

5. (COOH)2 + 2CH3COONa → NO REACTION

6. Pb + 2KI→ NO REACTION

7. MgCl2 + NH4OH+ (NH3)2HPO4 → Mg NH4)PO4 + 2NH4 +H2O

Test On Close Up

Colour of The Paste- Red Gel

 

Experiment Observation Inference
Take a part of the solution and add MgSO4 solution. Formation of white ppt. CO3 confirmed
Take a part of the solution and add ammonium oxalic (1-2 ml) and add little ammonium hydroxide Formation of white ppt.  Ca confirmed
Take a part of solution and add magnesium mixture (mixture of NH­4Cl and NH4OH) and allow to stand Formation of white ppt. PO4 confirmed.
Acidity a portion of aqueous solution whit dilute HNO3. Boil and cool and add AgNO3. Formation of white ppt. I is conformed
Take a small quantity of solution and add oxalic acid Formation of white ppt. CH3COO absent
To one part of the solution and add KI Formation of white ppt. Pb absent
To one part of the solution  and add solid NH­4Cl and NH4OH is slight excess and then add ammonium phosphate Formation of white ppt. Mg present

 

IONS PRESENT:- Mg, I, PO4, Ca, CO3, CH3COO

 

Chemical Reactions

1. CO3 +MgSO4 → MgCO3 + SO4 (white ppt.)

2. CO3 + 2CH3COOH → (CH3COO) 2Ca + H2O
(CH3COO)2Ca + (NH4)2C2O4 → 2CHCOONH4 +CaC2O4

3. NaHPO4 + MgCl2 + NH4OH → Mg (NH4) PO4 + 2NaCl + H2O

4. I+ AgNO3 → NO3+AgI (yellow ppt.)

5. (COOH)2 + 2CH3COONa → NO REACTION

6. Pb + 2KI→ NO REACTION

7. MgCl2 + NH4OH+ (NH3)2HPO4 → Mg (NH4)PO4 + 2NH4 +H2O

 

Conclusion

Hence after testing different samples of toothpaste, we find that Colgate has all necessary for stronger and whiter teeth

 

Bibliography

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