The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If...
The indicator phenol red changes from yellow to red between pH 6.8 and pH 8.4. If phenol is red added to a solution, and the solution turns red then
A.) The solution is basic and the pH must be at or below 7.0.
B.) The pH of the solution must be below 6.8, and the solution is basic.
C.) The pH of the solution must be below 6.8, and the solution is acidic.
D.) The pH of the solution must be above 8.4, and the solution is basic
E.) The pH of the solution is above 8.4, and the solution is acidic.
please answer with proper explanation and concepts used step by step with appropriate formula
Homework Answers
Add Answer to:
The indicator phenol red changes from yellow to red between pH
6.8 and pH 8.4. If...
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red...
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red (HMR) dissociates as follows: HMR red H'(g) + MR (ac) yellow If acid is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion: If base is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion:
Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What...
Phenol red is an indicator that changes color over a range from pH=6.4 to pH=8.0. What is Ka of phenol red?
Phenol red is another indicator commonly used to detect the presence of acid. This indicator is...
Phenol red is another indicator commonly used to detect the presence of acid. This indicator is red above pH7 and yellow below pH of 7. What would be the appearance of E. coli (gram negative rod, lactose fermenter) and S. aureus (gram positive cocci, lactose fermenter) if neutral red in MacConkey agar was replaced with phenol red?
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol Me...
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol MethpeMethyl Solution par pau ahr H20 (unboiled)5,0 5.5 Acidic Acidic Aeidic Basic Aciate 3 5.5 (paoq) 0'H O'9 NaCl O'h NaC,H,02 O'8 D'HN O'0 O'h ZnCl2 Acidic 0 Acidic Na2CO3 ja.5 Basic Color key: org- orange;-colorless; yell- yellow.
Table 2: Indicator, pH Range, and Color Change Beaker Indicator Amount Needed for Reaction to Complete...
Table 2: Indicator, pH Range, and Color Change Beaker Indicator Amount Needed for Reaction to Complete pH Range pH at Color Change Color (Initial:Final) 1 Bromothymol Blue 6 6.0-7.5 6.6 Blue > Light Yellow 2 Turmeric Indicator 6 7.5-8.8 5.3 Light Red > Yellow 3 Methyl Orange 20 2.3-4.6 7.9 Orange > Pink Table 3: Titration Data Part 2: mL Citric Acid Added Part 2: pH Part 3: mL Citric Acid Added Part 3: pH Part 3: Color 0.0 10.5...
For each of the solutions described below, determine the pH range for the solution using the...
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...
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions:...
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions: One contains NaOH, and the other contains H,904. Which solutic turn red? Which will turn yellow? Explain. Household Acids and Bases and pH Lab:
174 Problems and questions 1. Compare and contrast the three methods used to test pH (red...
174 Problems and questions 1. Compare and contrast the three methods used to test pH (red cabbage indicator, pH paper, and a pH meter). Did they give similar results? Which is the most accurate? Explain. 2. The hydroxide ion concentration of a solution is 2.5 x 10 M. What is the hydronium ion concentration? a) What is the pH? b) Is the solution acidic, basic, or neutral? c) 3. A few drops of HCl are added to two solutions, A...
The calmagite indicator changes from a pink to a blue color during the titration. Describe why...
The calmagite indicator changes from a pink to a blue color during the titration. Describe why the color change occurs. This question is part of the experiment "determination of water hardness", and you should answer the question based on the following background information(abstract information and you can get the answer). In this titration Calmagite is used an indicator for both calcium and magnesium. The equation below shows the competition reaction between the calmagite indicator (In) and EDTA for Mg and...
please help, thanks! FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment...
please help, thanks!
FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment Although you will use only small amounts of the olutions in this experiment, you must be aware of some of the hazards of these solutions. Brilly com- ment on the hazards of an aqueous solution of: 3 Astur | (1) NH A student performed an experiment similar to the one that you will perform but used different solutions The student's data are presented in...
3. Methyl red is an indicator that changes between red and yellow. In solution methyl red (HMR) dissociates as follows: HMR red H'(g) + MR (ac) yellow If acid is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion: If base is added to the solution which way do you expect the equilibrium to shift? What color would the indicator be? Explain your conclusion:
Indicator Color PH Narrow eangeAcidic Basic oR Bromo-papeR thymef NeutRal Alizarin Phenol HJ -पd yellow R Phenol MethpeMethyl Solution par pau ahr H20 (unboiled)5,0 5.5 Acidic Acidic Aeidic Basic Aciate 3 5.5 (paoq) 0'H O'9 NaCl O'h NaC,H,02 O'8 D'HN O'0 O'h ZnCl2 Acidic 0 Acidic Na2CO3 ja.5 Basic Color key: org- orange;-colorless; yell- yellow.
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...
2. Methyl orange indicator is red below pH 4.0, and yellow above 4.5. Consider two solutions: One contains NaOH, and the other contains H,904. Which solutic turn red? Which will turn yellow? Explain. Household Acids and Bases and pH Lab:
174 Problems and questions 1. Compare and contrast the three methods used to test pH (red cabbage indicator, pH paper, and a pH meter). Did they give similar results? Which is the most accurate? Explain. 2. The hydroxide ion concentration of a solution is 2.5 x 10 M. What is the hydronium ion concentration? a) What is the pH? b) Is the solution acidic, basic, or neutral? c) 3. A few drops of HCl are added to two solutions, A...
please help, thanks!
FQUL 465g Ac t all time the pH of San section Pre-Laboratory Assignment Although you will use only small amounts of the olutions in this experiment, you must be aware of some of the hazards of these solutions. Brilly com- ment on the hazards of an aqueous solution of: 3 Astur | (1) NH A student performed an experiment similar to the one that you will perform but used different solutions The student's data are presented in...
Most questions answered within 3 hours.
-
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 37 minutes ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 1 hour ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 1 hour ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 3 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 3 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 4 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 6 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 6 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 6 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 6 hours ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 6 hours ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 6 hours ago