Bromcresol green changes color from pH 3.8 to pH 5.4. If the indicator is yellow at pH 3 and blue at pH 6, what is the color of the indicator in a pH 4.6 solution?

Q: A is solution is prepared by mixing 25 mL of 0.1 M HCHO2 with 25 mL of 0.2 M NACHO2. The pH of the…

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Q: 14. Which indicator in yellow in a solution with a pH of 987 A methyl ornge R. hromthymol Mue C…

A: We have to tell which option is correct

Q: You are given three unknown solutions. One is strongly acidic (pH below 1), one is neutral, and one…

A: pH indicators are added in small amount to solutions so that they can indicate their pH by showing…

Q: Methyl orange changes color from pH 3.2 to pH 4.4. If the indicator is red at pH 3 and yellow at pH…

A: From the table, we can predict the colour of the indicator, (methyl orange).

Q: The useful pH range for a typical indicator is ________ 14 2 4…

A: pH is also called as the power of H+ ions. The pH value tells us about the acidic or the basic…

Q: What is the pH of a solution of 2.0 x 10–8M Ca(OH),?What color would you expect it to have with…

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Q: pK₂ = What is the color of this indicator in a solution with pH = 4?

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Q: Illustrate how a bufferworks using the C 2 H 5 N H 3 + / C 2 H 5 N H 2 buffer system.Show with…

A: An acid is the substance that loses protons or hydrogen ion to the solution. And a base is the…

Q: What is the color of methyl red indicator in a solution of pH 5?

A: The color of methyl red indicator in a solution of pH= 5 is orange color. pKa of methyl red…

Q: The indicator methyl orange has been added to both of thefollowing solutions. Based on the colors,…

A: The inidicator used is the methyl orange indicator which shows its pH change between the range of 3…

Q: In the quantitative determination of boric acids, an indicator is used: A) Xylenol orange B) Methyl…

A: The indicator changes the colour of an acidic or basic solution.

Q: Thymol blue is a diprotic acid/base indicator which we will call H2A. H2A is red, HA- is yellow, and…

A: Indicators are used in various kinds of titrations in qualitative analysis to identify the…

Q: Samples of an unknown solution are tested with different indicators. Base on the following evidence,…

A: The pH indicator or acid-base indicators are used to determine acidity and basicity of the solution.…

Q: A buffer is made by mixing 5.0 mL of 3.0 MNH,(aq) with 10 mL of 1.44 MNH,Cl(aq). What is the pH of…

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Q: For a solution of an indicator (e.g., a weak acid HIn), the color of the solution is determined by…

A: To determine the condition that is valid at Isosbestic point.

Q: A solution of a weak acid was tested with the following indicators and the colors noted: Methyl…

A: All acid base indicators have a functional pH range, let' say a to b. Below pH 'a', it shows its…

Q: For a given indicator, Ka = 9.52 x 10-10. Around what pH will the indicator change color? Give your…

A: For a given indicator, Ka = 9.52 x 10-10. Around what pH will the indicator change colour? Give your…

Q: True or False. An indicator where HIn is orange and In- is green will produce an orange solution at…

A: Given: An indicator where HIn is orange and In- is green will produce an orange solution at low pH.…

Q: A solution of a weak acid was tested with the following indicators and the colors noted: Methyl…

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Q: At a certain point in a titration, 25 mL of 0.1M NaOH, has been added to 40 mL of a 0.1M solution of…

A: Buffer solution is defined as an aqueous solution which have weak acid and Conjugate of Strong base.…

Q: A solution of a weak acid was tested with the following indicators and the colors noted: Methyl…

A: Methyl Violet - violet : Therefore, pH > 1.7 Thymol blue - Yellow : Therefore,  pH > 2.8…

Q: A diprotic acid, H2A, has the following ionization constants: K = 1.1 x 10 and K =2.5 x 106. In…

A: Given: Ka1 of H2A = 1.1 × 10-3  Ka2 of H2A = 2.5 × 10-6  And pH of buffer required = 5.80

Q: Preparation of buffers 1. Prepare 250ml of the following buffer solutions. Concentration Buffer…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A certain indicator, HA, has a K, value of 1.0 × 10-5. The protonated form of the indicator is red…

A: pKa = -log Ka pH = -log[H+]

Q: Phenolphthalein is an acid–base indicator. In solutions of pH < 8.5, it is colorless; in…

A: Phenolphthalein exists in the acidic form below the pH 8.5 at which no polar hydrogen atom is…

Q: What are the approximate pH ranges and color changes of the following dyes? Indicator pH range Color…

A: Indicators are the substance whose solution color changes due to change in pH and are called…

Q: A student is asked to prepare a buffer solution at pH = 8.60, using one of the following weak acids:…

A: Given : pH = 8.60

Q: bromothymol blue indicator has only one color change, from yellow (ph below 7) to blue (ph near 7).…

A: The acids which can easily donate proton are known as strong acids. More the strength of an…

Q: A 0.50 M solution of an acid HA has pH = 2.24. What is the value of Ka for the acid?

A: Given, molarity(M)=0.50M. The pH of the acid =2.24 To  calculate, Ka(dissociation constant of the…

Q: phenolphthalein is an indicator that when added to a soltuion, appears clean at a ph belowe 8 and…

A: Given Phenolphthalein is an indicator that when added to a solution, appears clean at a pH below 8…

Q: A 1.0 M solution of a weak acid, HA has a pH of 2.64. What is the value of Ka for this acid?

A: The acidic strength of all known acids is dependent on their dissociation constants. This constant…

Q: Write the color of indicators and its pH ranges. pH = 1.0 pH = 14.0 Phenolphthalein Methyl Orange…

A: pH indicators are weak acids , that are present in dyes , which indicate the change in pH of the…

Q: What pH would be measured from a solution that is made by mixing 100.0 mL of 0.050 M NaC2H3O2 and…

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Q: 4. A certain acid-base indicator is yellow in solution below pH 5.0 and red in solution above pH…

A: If pH <5, then the color of the acid-base indicator is yellow in solution. If pH >7, then the…

Q: A 0.10 M solution of a weak acid HA has a pH of 2.80. What is the value of Ka for HA?

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Q: When acid is added to a color indicator, it changes from purple to pure blue at a pH = 5.75. When…

A: Concept:  Acid-base indicators: They are chemicals used to determine whether an aqueous solution is…

Q: Phenolphthalein reacts to basic solutions (pH above 7) by changing to a pink color. If you had…

A: To turn the solution pink , the pH should be raised to pH = 7 or above.

Q: Ka

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Q: A student is asked to design an experiment that uses indicators to identify which of three unknown…

A: Data and solution is done in step 2.

Q: What

A: Buffer is the solution of mixture of weak acid/weak base with its salt of strong base/strong acid

Q: Explain the Group 5 cations , qualitative analysis. Draw a schematic diagram

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Q: 2) When acid is added to a color indicator, it changes from purple to pure blue at a pH = 5.75. When…

A: Acid-base indicators: They are chemicals used to determine whether an aqueous solution is acidic,…

Q: A colorless household solution was tested with three indicators shown above. The solution was…

A: If pH of a solution is 7 or bellow  7 then phenolphthalein solution is colorless. If pH of a…

Q: A 0.100 M solution of an acid, HA, has a pH = 1.52. What is the KA value for this acid?

A: Calculate the concentration of hydronium ion:

Q: Thymol blue is a unique indicator that has two set of color change, red to yellow near pH = 1.5 and…

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Q: What is a full range indicator? O An indicator that covers more than the full range An indicator…

A: Indicators are the chemical compounds that detect the visual change in solution when there is a…

Q: 1. Common impurity in solid sodium hydroxide.

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: Prepare 100 mL of a buffer solution. Select and calculate the amounts of the appropriate materials…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Phosphoric acid is a triprotic acid with the pKa values pKa1=2.148, pKa2=7.198, and pKa3=12.375.…

A: Phosphate buffer is having high buffering capacity and it is made according to the pH requirement.…

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.