9/12/12 pH lab- measuring the different chemicals

Today in lab we measured the pH of 13 different chemicals

We used a pH meter and pH paper.

We wrote down the answers from the meter, paper, the average and if it was an Acid, Base or Nuetral.

we have H2O, Buffer, Ammonia, and Vinegar.

 

• H2O- Meter 6, Paper 4.5, Average 5.5. It is Acid.
• Buffer- Meter 7.2, Paper 7, Average 7.1. It is a Nuetral.
• Vinegar- Meter 3.2, Paper 3, Average 3.1. It is an Acid.
• Ammonia- Meter 10.9, Paper 10, Average 10.2. It is a Base

 

We have Baking Soda, Bleach and Coke.

 

 

We also have Diet coke, and lemon with low concentration.

 

• Baking Soda- Meter 8.1, Paper 8, Average 8.1. It is a Base.
• Bleach- Meter 4.5, Paper N/A, Average N/A. It is an Acid.
• Coke- Meter 3, Paper 3, Average 3. It is an Acid.
• Diet Coke- Meter 3.4, Paper 3, Average 3.2. It is an Acid.
• Lemon low concentration- Meter 3.3, Paper 3, Average 3.2. It is an Acid.

We have Lemon Juice, Coffee, Rolaid and Detergent

 

 
• Lemon Juice- Meter 2.9, Paper 2, Average 2.5. It is an Acid.
• Coffee- Meter 6.0, Paper 4.5, Average 5.3. It is an Acid.
• Rolaid- Meter 4.6, Paper 5.5, Average 5.05. It is an Acid.
• Detergent- Meter 11.3, Paper 11.5, Average 11.4. It is a Base.