1. Is stimulated saliva acidic or basic? and what is it's corresponding exact pH or if possible pH rangE?
2. Is resting saliva acidic or basic? and what is it's corresponding exact pH or if possible pH rangE?
3. Explain the whole process: what is the influence in adding acids with different concentrations(such as: 0.25%, 0.1%, 0.05%, 0.025%, and 0.0075% HCl) with Saliva and starch paste. then placing it in a water bath at 40 degree Celsius, then later testing a small portion with iodine and Benedict's test in 5 minutes intervals, until it will give a positive result for Benedict's test.
4. Explain the whole process: what is the influence in adding alkali with different concentrations(such as: 2%, 1%, 0.5%, 0.125%, and 0.065% NaOH) with Saliva and starch paste, ALSO NEUTRALIZING IT WITH HAc. then placing it in a water bath at 40 degree Celsius, then later testing a small portion with iodine and Benedict's test in 5 minutes intervals, until it will give a positive result for Benedict's test.
5. WHY DOES ACID HAVE A GREATER INHIBITING POWER?