Addition of phenolphthalein to an unknown colorless solution does not cause a color change. The addition of bromthymol blue to the same solution leads to a yellow color. What other indicator or indicators would you want to use to determine the pH of the solution more precisely?

Q: Why is it important that the color change occurs by the addition of a single drop? Explain in terms…

A: Colour change is the main indication for the completion of a titration.

Q: An unknown solution is red with phenol red and colourless with thymolphthalein. From that…

A:

Q: Determine the Concentration of Acetic Acid in Vinegar a this lah, you wil detarmine the…

A: Vinegar contains acetic acid. By titrating this with a base we can easily calculate the…

Q: How does the change of color in indicators define the acidity or basicity of solution put into it?

A: It is Substance in which acid or base is added then due to difference in pH indicators changes it's…

Q: Addition of phenolphthalein to an unknown colorlesssolution does not cause a color change. The…

A: a) Given :Addition of phenolphthalein: No color change               addition of bromthymol blue:…

Q: A buffer solution contains 0.340 M ammonium chloride and 0.203 M ammonia. If 0.0488 moles of sodium…

A: To calculate the pH of the buffer solution after adding NaOH solution , we would first calculate the…

Q: The PH of 0.10 M methylamine is 11.8.when chloride salt of methylamine is added to this solution…

A:

Q: A solution is prepared that is initially 0.17 M in trimethylamine ((CH,) N), a weak base, and 0.20 M…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: If phenolphthalein has been added to 100 mL of a clear solution and the solution does not change…

A: Phenolphthalein is used as an indicator in acid-base titration reactions. In an acid–base titration…

Q: 50.00 mL of 0.200 M sodium dihydrogen pyrophosphate (N22H2P207) solution is combined with 25.00 mL…

A: Buffer solution is prepared, when an strong base is added into weak acid solution then resulting…

Q: why we use methyl orange as indicator in titration of strong base with weak base and not the…

A: NOTE : There is a typo error in the question. The correct question will be, "why we use methyl…

Q: How many moles of sodium hydroxide would have to be added to 225 mL of a 0.404 M nitrous acid…

A:

Q: It is a common practice to prepare buffer of different pH values from a single acid. Select a single…

A: Firstly this is a very relative question, that will be needing data values. A buffer is effective in…

Q: Water + Indicator and adding HCl Water + Inidcator + Buffer and adding HCl Water + Indicator and…

A: Concept:  Buffer solution: buffer solution  is an aqueous solution consisting of a mixture of a weak…

Q: In titrating 40.0 mL of 0.10 M of HCI solution with 0.15 M of KOH solution, what would be the pH of…

A: We have to calculate the pH of solution.

Q: In a system where a weak acid is an analyte, a strong base is a titrant, what is the milestone pH…

A:

Q: In terms of pH indicators, please fully explain what must occur in a solution to observe a colour…

A:

Q: Enlist the possible factors affecting the pH curve for acid base titration?

A: An acid-base titration is the titration used to determine the unknown concentration of an acid or…

Q: A sample of rainwater is tested for acidity by using two indicators. Additionof methyl orange to…

A: Methyl orange, methyl red are weak acids that exists as dyes and indicated the pH of a solution,…

Q: Briefly discuss titration errors from the use of acid/base indicators

A: There are two types of errors that occurs from the use of acid / base indicators. Determinate error…

Q: Identify the pH indicator below * O hydrogen peroxide O vinegar O phenolphthalein buffer

A: Answer - The correct option is (c) Phenolphthalein - Phenolphthalein, (C20H14O4), an organic…

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: Given a mixture of 100cm3 of 1.01M HCl and 400cm3 of 0.04 NaOH, calculate the pH of the solution.

A: We have given that Volume of HCl = V1 = 100ml Molarity of HCl = M1 = 1.01M Volume of NaOH = V2…

Q: A buffer solution contains 0.209 M ammonium chloride and 0.301 M ammonia. If 0.0515 moles of…

A: 1- First calculate the moles of salt and base before addition of acid HI :  a) moles of NH4Cl = […

Q: Describe and explain the two situations in which pH can have an appreciable effect on the aqueous…

A: Most of the ionic compounds are soluble in water, but their degree of solubility varies.  Not the…

Q: A buffer solution contains 0.337 M ammonium bromide and 0.212 M ammonia. If 0.0250 moles of sodium…

A: Given: The concentration of NH3=0.337 M The concentration of NH4Br=0.212 M. The number of moles of…

Q: . (a) Which is the stronger base—the basic form of the indicator cresol red or         the basic…

A: Indicators are substances whose solutions change color due to changes in pH. They are usually weak…

Q: Which of these indicators is best suited to distinguish between a solution that is slightly acidic…

A: How to differentiate between slightly acidic and slightly basic solution with the help indicator?

Q: During the demonstration, before each metal was added to the water, a drop of an acid-base…

A:

Q: In the course of various qualitative analysis procedures, the following mixtures are encountered:…

A: Cd2+ ion is present in group 2. It will get precipitate out by using 0.2M HCl saturate with…

Q: Describe the basis of buffer action and indicator detection.

A: To find: A description about the basis of buffer action and indicator detection

Q: In titrating 40.0 ml of 0.10 M of HCI solution with 0.15 M of KOH solution, what would be the pH of…

A: Given: Concentration of HCl = 0.10 M Volume of HCl solution used = 40.0 mL = 0.040 L…

Q: in titrating 40.0 mL of 0.10 M of HCI solution with 0.15 M of KOH solution, what would be the pH of…

A: The balanced chemical reaction is  HCl + NaOH ------> NaCl + H2O Number mmoles of HCl = molarity…

Q: A buffer solution is desired to be prepared by mixing 100 mL of 0.6M ammonia solution and 150 mL of…

A: Given, Volume of ammonia = 100 mL Molarity of ammonia = 0.6 M Volume of ammonium chloride = 150 mL…

Q: A buffer solution contains 0.341 M ammonium bromide and 0.480 M ammonia. If 0.0405 moles of…

A: On addition of an acid to the basic buffer solution, the concentration of weak base decreases…

Q: The addition of hydrofluoric acid, HF and to water produces a buffer solution?

A:

Q: A 1.45 L buffer solution consists of 0.122 M butanoic acid and 0.272 M sodium butanoate. Calculate…

A:

Q: An unknown solution is blue with indigo carmine and blue with thymolphthalein. From that…

A: pH of solution is defined as negative logarithm of H+ ions.

Q: 1 mL of 0.01 M NaOH and 1 mL of 0.01 M CH3COOH are mixed. What is the pH of the solution. Explain…

A:

Q: Explain how the pH of a mixture of aqueous ammonium chloride and aqueous ammonium remains constant…

A: The solution that can resist the addition of the strong acid or strong base is termed as the buffer…

Q: In titrating 40.0 mL of 0.10 M of HCI solution with 0.15 M of KOH solution, what would be the pH of…

A: Answer :- pH = 2.44…

Q: In the laboratory, a general chemistry student measured the pH of a 0.558 M aqueous solution of…

A: The base (B) isoquinoline C9H7N  in aqueous solution can be represented as,…

Q: A buffer solution contains 0.289 M KH2PO4 and 0.399 M K2HPO4. If 0.0485 moles of hydroiodic acid…

A: To calculate the pH of the resulting solution when 0.0485 moles of hydroiodic acid are added to 250…

Q: A solution is prepared by mixing 80 mL of 0.2 M KH2PO4 and 120 mL of 0.2 M K2HPO4 . What is its pH?

A: Moles of KH2PO4 ( acid), = 0.2 M × 0.08 L = 0.016 mol   Moles of K2HPO4 (base), = 0.2 M × 0.120 L =…

Q: The pH of 0.10M methylamine is 11.8. When the chloride salt of methylamine is added to this solution…

A:

Q: Write (+) if the compound would test positive in the following qualitative tests and (-) if not.

A: given Write (+) if the compound would test positive in the following qualitative tests and (-) if…

Q: A certain organic base of the general formula ROH serves as an indicator in a neutralization…

A:

Q: A buffer solution contains 0.274 M ammonium bromide and 0.310 M ammonia. If 0.0261 moles of…

A: Given : Concentration of NH4Br = 0.274 M Concentration of NH3 = 0.310 M Volume of buffer solution =…

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.