250 Experiments 2. A solution causes a yellow color with thymol blue, an orange color with methyl orange, a color w...
b. Solution B thymol blue: yellow methyl orange: yellow methyl red: yellow bromothymol blue: blue Range of pH:
yellow red green orange purple blue Select the color of the solution using the indicator thymol blue. When you first add indicator to your Na2CO3 solution, the color is blue When you reached the first equivalence point when moles of acid equals moles of base, the color is orange x. When you weren't paying attention and added too much HCl, the color is purple lx. When you really weren't paying attention and reached the second equivalence point, which is NOT...
A substance is orange in methyl orange, purple in crystal violet, yellow in bromthymol blue, colorless in phenolphthalein, green in bromcresol green, and yellow in allizarin yellow-R What is the narrowest pH range it can have Explain:
Use the Table 7.1, estimate the pH of following solutions. The colors of the 4 indicators in the solution are given. Explain your answer a. Solution A 2. 3. Make studie acid s you g your pre-l thymol blue: yellow methyl orange: yellow methyl red: orange bromothymol blue: yellow Range of pH b. Solution B thymol blue: yellow methyl orange: yellow methyl red: yellow bromothymol blue: blue Range of pH Row C: methyl red Row D: bromthymol blue 4. Swirl...
For each of the solutions described below, determine the pH range for the solution using the information given and the indicator chart Solution A Indicator Used alizarin yellow Indicator color Yellow bromthymol blue yellow methyl violet violet Range bear the 21 less than 7.6 leathen lib really them 5.1 Gooher the 3.2 bromcresol green green methyl red red The pH range for solution A is 3.2 7.6 Solution B Indicator Used methyl red Indicator color yellow Range leroth 67 alizarin...
5. A rainwater sample shows a yellow color when tested with both methyl red and bromthymol blue. What is the approxi. mate pH of the sample? Is it acidic, basic, or neutral? 6. Calculate the pH of a solution with [OH-] = 1.0 x 10-6
1. A substance is orange in methyl orange, purple in crystal violet, yellow in bromthymol blue, colorless in phenolphthalein, green in bromcresol green, and yellow in allizarin yellow-R. What is the narrowest pH range it can have? Explain: 2. Write the balanced equation for the reaction of NaOH with H2S04: 3. (a) Why do we run the titrant from the burette into a waste beaker before beginning the titration? (b) How much HCl do we initially add to our erlenmeyer...
3. Explain the series of color changes that can occur on thymol blue indicator by the addition of the following solutions. In each case, give the approximate pH of the solution Color change Red to Yellow Yellow to Blue pH range 12 to 2.8 Thymol blue 8.2 to 9.1 a) A few drops of thymol blue are added to 0.1 M aqueous solution of HCl(aq). b) By adding some solid sodium acetate, NaCH,O2 to a solution of (a) e) By...
1. 4.4 6.2 A substance is orange in methyl orange, purple in crystal violet, yellow in bromthymol blue, colorless in phenolphthalein, green in bromcresol green, and yellow in allizarin yellow-R. What is the narrowest pH range it can have 8.3 oH Explain: 2. Write the balanced equation for the reaction of NaOH with H2S04: 3. (a) Why do we run the titrant from the burette into a waste beaker before beginning the titration? (b) How much HCl do we initially...
i need help answering these questiona the graph helps to answer #1 Experiment 4 Advance Study Assignment: pH, Its Measurement and Applications 1. A solution of a weak acid was tested with the indicators used in this experiment. The colors observed were as follows: Methyl violet Thymol blue Methyl yellow violet orange red Congo red Bromcresol green yellow Chapter 4: pH Measurements-Buffers and Their Properties What is the approximate pH of the solution? 2. An aqueous solution of NH, has...