It's color change rang at 5.3 ( pKa = 5.3 and Ka = 2.0 • 10^-5)
So we used this indicator for stronger acid vs weaker base. Because it's changed the color at lower pH
Correct answer is
First option
The acid form of the indicator bromocresol green has ka = 2.0 * 10-5. For which...
15. The acid-base indicator bromocresol green has a Ka of 6.3 x 10-5. Its protonated form is yellow while its deprtonated form is blue. If bromocresol green is added to a colorless solution with a pH of 8, then what will the color be?
< Question 4 of 12 > Use the titration interactive to answer this question. yellow Bromocresol green is an appropriate indicator in the titrations of which analytes? strong acid strong base weak base weak acid
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
give a brief description of the difference between a strong acid and a weak acid Name Section Acids, Bases and Antacids * MS Experiment #8 Prelab Exercise Give a brief description of the differ a for each). A strong a strong acid and one example of a weak acid one exampy alone and is one which specific chemical Solution, whereas a weak acid ligsociet 30 urov n om ciate into H+ ion in aqueous solution Example of strong and chlo...
Methyl orange is an indicator with a Ka of 1 x 10-4. Its acid form, HIn, is red, while its base form, In-, is yellow. At pH 7.0, the indicator will be___________. a. red. b. orange. c. yellow. d. blue. e. not enough information
Which indicator in the table is best suited for confirming that a water sample is neither acidic nor basic? bromocresol green O methyl orange bromothymol blue phenolphthalein The K, of a weak monoprotic acid is 1.59 x 10-5. What is the pH of a 0.0808 M solution of this acid? pH =
A weak acid indicator HIn is blue while its conjugate base In is green. Kaln for the indicator is 7.7 x 10*5 Over what pH range does the indicator change color? lower pH upper pH
A weak acid indicator Hin is blue while its conjugate base in is green. Kain for the indicator is 4.7 x 10-5 Over what pH range does the indicator change color? lower pH upper pH
a) An unknown indicator (called “HIn”) has a Ka of 4.0 x 10-6. The color of the neutral form is green, and that of ionized form is red. The indicator is added to a HCl solution, which is then titrated against a NaOH solution. At what pH will the indicator change color? b) 350. mL of a NaOH solution was added to 500. mL of 2.50 M HNO2. The pH of the mixed solution was 1.75 units greater than that...
Which of the following oxoacids has the smallest value for Ka,1 ? H2TeO3 H2SO3 H2TeO4 H2SeO4 H2SeO3 H2SO4 Which of the following choices is appropriate if you have made an HBrO/NaBrO buffer and the pH is 8.0, and you want to have the buffer with equal amounts of conjugate components. Choose all that apply. Add some strong base Add some strong acid Add some weak base Add some weak acid Add some water