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Is methyl orange the indicator used in the titration of na2co3 against hcl solution?
No, methyl orange is not commonly used as the indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is the indicator of choice for this titration, as the endpoint is at a pH of around 8.2, which is the color change range of phenolphthalein.
Is methylorange the indicator used in the titration of Na2CO3 against HCl solution?
Methyl orange is not commonly used as an indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is a suitable indicator for this titration because it changes color in the pH range of the equivalence point.
Why phenolphthalein cannot be used as an indicator for titrating a weak base against a strong acid?
Phenolphthalein is not suitable for this titration because its color change occurs over a pH range that is beyond the equivalence point of the weak base and strong acid titration. At the equivalence point of this titration, the solution is acidic, which is below phenolphthalein's color change pH range. This can lead to inaccurate results and difficulty in determining the endpoint of the titration.
Why is phenolphthalein indicator used in the titration of oxalic acid against sodium hydroxide?
Phenolphthalein is used as an indicator in the titration of oxalic acid against sodium hydroxide because it undergoes a color change at the pH region where the reaction between oxalic acid and sodium hydroxide is neutralized. Oxalic acid is a diprotic acid, meaning it requires two equivalents of sodium hydroxide to be fully neutralized. Phenolphthalein changes color at a pH of around 8.2-10, which is ideal for indicating the endpoint of the titration.
What are the best indicator use in titration of weak base against strong acid?
The best indicator to use in the titration of a weak base against a strong acid is phenolphthalein. Phenolphthalein changes color from colorless to pink at a pH range of about 8.2 to 10.0, which is suitable for detecting the endpoint of the titration when the weak base is completely neutralized by the strong acid.
Is methyl orange the indicator used in the titration of na2co3 against hcl solution?
No, methyl orange is not commonly used as the indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is the indicator of choice for this titration, as the endpoint is at a pH of around 8.2, which is the color change range of phenolphthalein.
Is methylorange the indicator used in the titration of Na2CO3 against HCl solution?
Methyl orange is not commonly used as an indicator in the titration of Na2CO3 against HCl solution. Phenolphthalein is a suitable indicator for this titration because it changes color in the pH range of the equivalence point.
Why phenolphthalein cannot be used as an indicator for titrating a weak base against a strong acid?
Phenolphthalein is not suitable for this titration because its color change occurs over a pH range that is beyond the equivalence point of the weak base and strong acid titration. At the equivalence point of this titration, the solution is acidic, which is below phenolphthalein's color change pH range. This can lead to inaccurate results and difficulty in determining the endpoint of the titration.
Why is phenolphthalein indicator used in the titration of oxalic acid against sodium hydroxide?
Phenolphthalein is used as an indicator in the titration of oxalic acid against sodium hydroxide because it undergoes a color change at the pH region where the reaction between oxalic acid and sodium hydroxide is neutralized. Oxalic acid is a diprotic acid, meaning it requires two equivalents of sodium hydroxide to be fully neutralized. Phenolphthalein changes color at a pH of around 8.2-10, which is ideal for indicating the endpoint of the titration.
What are the best indicator use in titration of weak base against strong acid?
The best indicator to use in the titration of a weak base against a strong acid is phenolphthalein. Phenolphthalein changes color from colorless to pink at a pH range of about 8.2 to 10.0, which is suitable for detecting the endpoint of the titration when the weak base is completely neutralized by the strong acid.
Best indicator for lactic acid when titrated against standard NaOH?
The best indicator for titrating lactic acid against standard NaOH is phenolphthalein. It changes color in the pH range of about 8.2 to 10, which is suitable for the endpoint of the titration of lactic acid (pKa ≈ 3.9). This indicator appears pink at high pH and colorless at acidic pH, allowing for a clear visual indication of the endpoint of the titration.
Why phenolphthalein used as best indicator against NaOH?
Phenolphthalein is a suitable indicator for NaOH because it changes color sharply from colorless to pink at the pH range of 8.2 to 10.0, which corresponds well to the endpoint of the titration of NaOH with an acid. This sharp color change allows for accurate and precise detection of the equivalence point in the titration process.
Which indicator is suitable for the titration of washing soda against HCL and why?
Phenolphthalein is a suitable indicator for titration of washing soda (sodium carbonate) against hydrochloric acid. This indicator changes color in the pH range of 8.2 to 10, making it ideal for this titration since the end point occurs when all the sodium carbonate has reacted to form sodium chloride and carbonic acid, resulting in a pH above 8.2.
What indicator in titration of sodium carbonate solution against hydrochloric acid would give a complete neutralization?
The indicator methyl orange can be used in the titration of sodium carbonate solution against hydrochloric acid to give a complete neutralization. At the endpoint, when all the carbonate ions have reacted to form bicarbonate ions, the solution will turn from yellow to pink.
What indicator will be used in standardization of sulfuric acid against sodium carbonate?
In standardization of sulfuric acid against sodium carbonate, the indicator typically used is phenolphthalein. Phenolphthalein turns pink in basic solutions, which helps in determining the endpoint of the reaction between sulfuric acid and sodium carbonate.
What can affect purity of aspirin?
Firstly place 100 to 150 mg of aspirin into a 125 ml conical flask. Next proceed to mix in 15 ml of 95% ethanol solution and add 2 drops of phenolphthalein indicator. Then use the titration method to mix this solution against a standard solution of sodium hydroxide from a burette. Using the value obtained from the titration calculate the molarity of the aspirin. Then calculate the ratio of the observed molarity of aspirin with its theoretical molarity and finally multiply this ratio with 100 to obtain the percentage purity of the aspirin sample.
Why phenolphtalein is use in titration of strong acid against strong base?
Phenolphthalein is used as an indicator in the titration of a strong acid and a strong base because its color transition occurs within a suitable pH range for this type of titration (pH 8.3-10.0). It changes from colorless in acidic solutions to pink in basic solutions, making it easy to observe the endpoint when the acid-base reaction is complete.
