Neutral red is a vital stain. It stains cells without quickly killing them. Many biological stains kill living cells. 2. Neutral red goes through an obvious color change‚ from red at about pH 6.8 to yellow at pH 8.0. 3. A 1% solution of sodium bicarbonate has a pH of about 8.5. 4. Yeast cells have an internal pH that is slightly acidic (about 5.5 to 6.0). Concepts • Diffusion • Active transport • Acid–base indicators • Selective permeability Materials Ammonia solution‚ NH3 ‚ 0.01 M Beaker
Premium Sodium hydroxide Sodium bicarbonate Hydrochloric acid
point where there is more than enough enzyme to deal with all the available substrate‚ so the addition of more enzymes has no effect. 2. pH Conditions All enzymes have an optimum pH value. Most work best at neutral pH 7‚ however there are certain exceptions. Enzymes in our stomach work best in acidic conditions. By altering the optimum pH the H+ and OH-ions found in acids and alkalis can mess up the ionic
Free Enzyme Hydrogen peroxide PH
An investigation into the total acid content of assorted brands of lemon and lime soft drink Abstract: The aim of this experiment was to determine the total levels of carbonic acid concentration in 3 differing brands of lemon and lime soft drinks. Research Question: Does the acid content in three different lemon and lime flavoured soft drink brand differ significantly? The purpose of this investigation is to calculate the total acid content within different brands of lemon
Premium Carbon dioxide Acid Acid dissociation constant
ONE Date of Condn. Date of Subn. Sign 1 Estimation of COD of the given sample of water. 2 Estimation of Manganese in the given pyrolusite ore. 3 Estimation of Magnesium by EDTA method. 4 Estimation of purity of drug using pH meter. 5 Estimation of Ammonia in ammonium salts. 6 Polarimetric estimation of sugar CYCLE TWO Date of Condn. Date of Subn. Sign 7 Estimation of Phosphorous in the mixed sample. 8 Estimation of Sugar by Lane-Eynon
Premium Ammonia Acetic acid Magnesium
group. If NaCl was a buffer than the pH would be stabled as the sodium phosphate buffer. If NaCl was not a buffer than the pH would fluctuate like the negative control‚ water. During the first trial and prior to the drops of 0.5 M of HCl acid‚ the pH of sodium chloride was 7.50. After the addition of 5 drops of 0.5 M of HCl‚ the pH decreased by 4.83 and ended at 2.67 on the pH scale. When comparing the results of the sodium chloride to the control groups‚ the total pH change of sodium phosphate was only
Premium PH Acid Hydrochloric acid
* Bedofen for muscle spasm‚ * dantrium for spasticity‚ * Famotidine for GERD‚ * Depakote for seizures. Blood gas and X-ray was ordered and the ABG result reveal “A PARTIALLY COMPENSATED RESPIRATORY ACIDOSIS WITH MODERATE HYPOXEMIA. PH 7.31‚ PCO2 65‚ HCO3 34.2‚ Pa02 50‚ Sp02 83.5%. The first X-ray shows no active disease. However‚ repeat x-ray 3 hours later showed complete opacification of the right lung and right upper lobe atelectasis. posteroanterior chest radiograph is shown
Premium Pneumonia Hemoglobin Bicarbonate
seconds‚ pH = 7.38 2. At 40 seconds‚ pH = 7.38 3. At 60 seconds‚ pH = 7.38 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No. 5. Was the pH level always within the “normal” range for the human body? Yes. 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No. Activity 2a: Hyperventilation – Run 1 1. At 20 seconds‚ pH = 7.45 2. At 40 seconds‚ pH = 7.5 3. At 60 seconds‚ pH = 7.66 4. Maximum pH =
Premium PH Carbon dioxide
seconds‚ pH = 7.4 2. At 40 seconds‚ pH = 7.4 3. At 60 seconds‚ pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No 5. Was the pH level always within the “normal” range for the human body? Yes 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No Activity 2a: Hyperventilation – Run 1 1. At 20 seconds‚ pH = 7.47 2. At 40 seconds‚ pH = 7.52 3. At 60 seconds‚ pH = 7.67 4. Maximum pH = 7.68 5. Did the pH level of
Premium PH Carbon dioxide
Hypothesis: If enzyme activity is affected by the pH of a solution‚ then the enzymes will experience the greatest activity at a pH of 6. Variables: Independent Variables Dependent Variable Controls Four different pH values (10‚ 7‚ 6‚ and 3) Change in color of the solution The amount of potato extract‚ pH solution‚ and catechol used (1 cm +/- .1cm) Size of the test tubes Amount of time allowed for the catechol to sit with the potato extract and pH solution (20 minutes with 5 minute intervals
Premium PH
Vu Yr. 12 Chemistry Viet Vu Yr. 12 Chemistry Table of Contents Aim 2 Hypothesis 2 Background and Theory Review 2 Swimming Pools 2 Equilibrium (dynamic‚ static‚ Le Chatelier’s Principle) 2 pH 4 Chlorine 5 Equilibrium Constant 6 Wavelengths and UV Rays 6 Rationale 7 Materials and Method 8 Results 14 Calculations 18 Discussion 24
Premium Chlorine PH Swimming pool