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Why methyl orange alkalinity equal to total alkalinity?
Alkalinity is different from basicity, which is directly related to the pH. The higher the pH, the more basic the water.Like acidity, there are different ways to measure and report alkalinity;The first is to titrate the water with acid titrant to the phenolphthalein end point. This is called the phenolphthalein alkalinity. Since phenolphthalein changes color at pH~8.3, this corresponds to a pH where all the CO32- present would be protonated.Second, acid titration to a methyl orange end point, pH~4.3, further converts the bicarbonate to aqueous carbon dioxide. At this end point, some of the weaker conjugate bases are protonated. The methyl orange end point titration indicates total alkalinity.
Why is there a need to use two indicators in titrating a carbonate mixture?
One single probe may contain two bases: Either OH- and CO32-, or CO32- and HCO3- . (All three of them is non-coexsistant, hence it is impossible)Titration with strong acid will reach the first equivalence point at pH = 8 (phenolphtaleine change to colorless) when both, or one, of these completed reactions: OH- + H+ --> H2O (if OH- is present) andCO32- + H+ --> HCO3-Further titration with strong acid, after addition of methyl orange indicator will reach the second equivalence point at pH = 4 (methyl orange changes from orange-yellow to red) when this reaction is completed : HCO3- + H+ --> H2CO3From the difference and total of these two titrtions (done with the same probe in two steps) both compounds can be determined.
Double indicator titration calculation for mixture of sodium hydroxide and sodium carbonate?
In a double indicator titration for a mixture of sodium hydroxide (NaOH) and sodium carbonate (Na2CO3), phenolphthalein and methyl orange are typically used as indicators. First, phenolphthalein indicates the endpoint for the neutralization of Na2CO3 with a strong acid, showing a color change at a pH of around 8.2 to 10.0. After all Na2CO3 has reacted, methyl orange can be used to determine the remaining NaOH, changing color at a lower pH (3.1 to 4.4). To calculate the concentrations, you need to measure the volume of acid used to reach the endpoints and apply stoichiometry based on the balanced chemical equations for the reactions involved.
How do you make orange peel lip gloss?
First, peel an orange, then... rub it all over your lips!! ;)
How methyl alcohol and ethyl alcohol?
Methyl alcohol, also known as methanol, has one carbon atom in its molecule, while ethyl alcohol, also known as ethanol, has two carbon atoms. Both alcohols are commonly used as solvents and fuels, but ethyl alcohol is also found in alcoholic beverages and is metabolized by the human body. Methanol is toxic and can cause blindness or death if ingested.
Can you use methyl orange and phenolphthalein fro weak acid weak base titrations?
first of all remember that titr'n b/w weak acid and weak base is impossible. weak acid*strong base-phenolphthalein str acid*weak base-methyl orange if both are strong can use both.
What is the chemical formula for methyl orange?
Methyl orange is synthesized by reaction of sulfanilic acid, sodium nitrite, and dimethylaniline. First, sulfanilic acid is dissolved in dilute aqueous acid. Sodium nitrite is added to produce a disowning salt .Chemical formula of Methyl Orange: C14H14N3NaO3S
How does column chromatography separate a mixture of methylene blue and methyl orange?
Methylene blue and methyl orange will have different binding affinities with the column material, and thus one will pass through the column more slowly than the other. This will result in one of the compounds being eluted from he column before the other. The one with the weakest binding to the column will be eluted first.
Why methyl orange alkalinity equal to total alkalinity?
Alkalinity is different from basicity, which is directly related to the pH. The higher the pH, the more basic the water.Like acidity, there are different ways to measure and report alkalinity;The first is to titrate the water with acid titrant to the phenolphthalein end point. This is called the phenolphthalein alkalinity. Since phenolphthalein changes color at pH~8.3, this corresponds to a pH where all the CO32- present would be protonated.Second, acid titration to a methyl orange end point, pH~4.3, further converts the bicarbonate to aqueous carbon dioxide. At this end point, some of the weaker conjugate bases are protonated. The methyl orange end point titration indicates total alkalinity.
Who was the first orange president?
Donald trump was the first orange president
Why is there a need to use two indicators in titrating a carbonate mixture?
One single probe may contain two bases: Either OH- and CO32-, or CO32- and HCO3- . (All three of them is non-coexsistant, hence it is impossible)Titration with strong acid will reach the first equivalence point at pH = 8 (phenolphtaleine change to colorless) when both, or one, of these completed reactions: OH- + H+ --> H2O (if OH- is present) andCO32- + H+ --> HCO3-Further titration with strong acid, after addition of methyl orange indicator will reach the second equivalence point at pH = 4 (methyl orange changes from orange-yellow to red) when this reaction is completed : HCO3- + H+ --> H2CO3From the difference and total of these two titrtions (done with the same probe in two steps) both compounds can be determined.
How do you separate iodine and methyl alcohol?
Iodine and methyl alcohol can be separated by fractional distillation, as they have different boiling points. Methyl alcohol has a lower boiling point than iodine, so it will vaporize first and can be collected separately.
How do you prepare methyl red for titration?
To prepare methyl red for titration, first make a stock solution by dissolving the dye in a suitable solvent such as water or alcohol. Then, carefully add the desired amount of the stock solution to your titration flask based on the concentration needed for your specific experiment. Finally, ensure proper mixing before using the solution for titration.
Why methyl group cannot be present at first carbon of the chain?
A methyl group, which consists of a carbon atom bonded to three hydrogen atoms, is unable to be present at the first carbon of a chain due to the principle of tetravalency in carbon chemistry. The first carbon must form four single covalent bonds to satisfy its tetravalency, thus it cannot accommodate an additional methyl group. This would violate the octet rule, which states that elements tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.
What was one of Steve hillenburgs first careers before the show SpongeBob?
He was a teacher of Marine biology at the Orange County Ocean Institute .
How much 6M NaOH needed to react with methyl salicylate?
To calculate the amount of 6M NaOH needed to react with methyl salicylate, you would first need to know the molar ratio between NaOH and methyl salicylate from the balanced chemical equation of the reaction. Then, you can use the volume or weight of methyl salicylate and the molarity of NaOH to determine the amount needed for complete reaction.
An omega-3 fatty acid has its first double bond on the?
The first double bond is between the third and fourth carbons from the methyl (CH3) end of the fatty acid molecule.
