List in point form 4 sources of error in an indicator, pH and buffers lab.
Which of the following would tell you that a weak base is present? A. An indicator added to the solution turns green-blue. B. If there is a high reaction rate. C. If the pH of the solution is close to 14. D. If the solution is a good conductor of electricity.
A certain indicator, HA, has a K, value of 0.00032. The protonated form of the indicator is red and the ionized form is yellow. What is the pK, of the indicator? pk = What is the color of this indicator in a solution with pH = 6? O yellow red orange
A certain indicator, HA, has a K, value of 0.00040. The protonated form of the indicator is yellow and the ionized form is red. What is the pK, of the indicator? PK = What is the color of this indicator in a solution with pH = 5? O yellow orange red
Universal indicator is a solution which contains several acid base indicators and provided sufficient color changes to estimate pH over a wide range. One such indicator contains a mixture of thymol blue, phenolphthalein, and methl orange. Determine the color of this indicator at a) pH=1.5, b) pH=4, c) pH 6.5, d) pH=9, and e) pH=11.5. Explain reasoning.
Which indicator below could be used in the titration of aqueous NaOH with HCl solution? Indicator Acid Range Color Color-change pH Basic Range Color i. pink 1.2-2.8 yellow ii. blue 3.4-4.6 yellow iii. yellow 6.5-7.8 purple iv. colorless 8.3-9.9 red
A certain indicator, HA, has a Ka value of 2.0 x107. The protonated form of the indicator is blue and the ionized form is yellow What is the pKa of the indicator? Number What is the color of this indicator in a solution with pH 5? O blue O yellow O green
A certain indicator, HA, has a K value of 1.6 x 10^-7. The protonated form of the indicator is blue and the ionized form is yellow. What is the pKa of the indicator? What is the color of this indicator in a solution with pH = 9?
Show all work and steps please 24 Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH less than 8 3) and pink in the base form (pH greater than 100) It is a weak acid with a pka of 8.7. What fraction is in the acid form when the ocid color is apparent? What fraction is in the base form when the base color is apparent? 24 Phenolphthalein is a commonly used indicator that is...
how do I calculate pH using this information for Solution(s) 6,7,8, and 9? plI Experiments Lab 17 Part B- The Effect of Adding Acid or Base to a Buffered Solution Solution 6 30.0 mL. 0.10 M HOAc+40.0 mL 0.10 M NaOAc Data Solution 20.0 mL. Solution 6+20.0 mL. DI water Data 1. Indicator color Light orae 2 plH (indicator) . 3. p (p meter).85 4 pH (calculated) Indicator color Lgkt ornoge 2 pH (indicator) 5.O 3. pH (pH meter) 4.85...