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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.
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What type of titration is involved in the assay of milk of magnesia?
The assay of milk of magnesia typically involves an acid-base titration. In this process, a known concentration of hydrochloric acid (HCl) is titrated against the magnesium hydroxide present in milk of magnesia. The endpoint of the titration is indicated by a pH indicator, which changes color when the solution reaches neutrality, allowing for the calculation of the magnesium hydroxide content in the sample.
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 is the action of sodium hydroxide on the colour of phenolphthalein?
Phenolphthalein is pink in basic solutions.Phenolphthalein is used as an indicator in volumetry - acid-base titration.
Changes color at the endpoint of titration?
The color change at the endpoint of a titration is due to the indicator used in the titration process. The indicator changes color based on the pH of the solution, signaling the completion of the reaction between the analyte and titrant. This color change helps determine the equivalence point of the titration.
Why it is necessary to cap the buret and minimize the CO 2 absorption from the NaOH solution. How will this affect your results?
When sodium hydroxide absorb carbon dioxide sodium carbonate is formed. But we need a defined mass (volume) of NaOH for a titration.
What indicator can you choose for the titration of oxalic acid with sodium hydroxide?
Phenolphthalein is a suitable indicator for the titration of oxalic acid with sodium hydroxide. It changes color from colorless to pink at the endpoint of the titration when the acid has been completely neutralized.
What type of titration is involved in the assay of milk of magnesia?
The assay of milk of magnesia typically involves an acid-base titration. In this process, a known concentration of hydrochloric acid (HCl) is titrated against the magnesium hydroxide present in milk of magnesia. The endpoint of the titration is indicated by a pH indicator, which changes color when the solution reaches neutrality, allowing for the calculation of the magnesium hydroxide content in the sample.
What is the mechanism of methyl orange in sodium carbonate and hydrogen chloride titration?
Methyl orange acts as a pH indicator in the process of sodium carbonate and hydrogen chloride titration. The addition of methyl orange will indicate the ratio of sodium carbonate to hydrogen chloride by the colour which develops.
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.
Which indicator would you use in the titration sulphuric acid with naoh?
In the titration of sulfuric acid with sodium hydroxide (NaOH), a pH indicator suitable for a strong acid-strong base titration, such as phenolphthalein, can be used. Phenolphthalein changes color at around pH 8.2-10, which is suitable for detecting the endpoint of the neutralization reaction between sulfuric acid and sodium hydroxide.
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.
How is the endpoint of a titration between H3PO4 and NaOH determined?
The endpoint of a titration between H3PO4 (phosphoric acid) and NaOH (sodium hydroxide) is determined by using an indicator that changes color when the reaction is complete. This indicator helps to visually identify when the acid and base have reacted in the correct proportions, indicating the endpoint of the titration.
What is the action of sodium hydroxide on the colour of phenolphthalein?
Phenolphthalein is pink in basic solutions.Phenolphthalein is used as an indicator in volumetry - acid-base titration.
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.
Why phenolphthalein is chosen as the suitable indicator for sodium hydroxide?
Phenolphthalein is chosen as a suitable indicator for sodium hydroxide because its color change occurs in the pH range around 8.2 to 10.0, which is close to the pH range of the equivalence point for the titration of a strong base like sodium hydroxide with a strong acid. This allows for a sharp and easily detectable color change at the endpoint of the titration.
In HCl and NaOH titration which indicator is used?
Phenolphthalein is commonly used as an indicator in the titration of hydrochloric acid (HCl) with sodium hydroxide (NaOH). Phenolphthalein changes color from colorless to pink at the endpoint of the titration when all the acid has been neutralized by the base.
Why bromocresol indicator used for sodium carbonate and HCl titration?
Bromocresol green is used as an indicator in the titration of sodium carbonate with hydrochloric acid because it changes color within the pH range of the endpoint of the titration. It turns yellow in acidic solutions (due to excess HCl) and blue in basic solutions (due to excess Na2CO3), making it suitable for detecting the equivalence point where the moles of acid have reacted completely with the moles of base.
