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What is the molarity of iron III nitrate made from 10 ml of a 1.00 M solution and then diluted by adding 90 ml of water?
The molarity is 0,1 M.
What is the purpose of adding ammonium thiocyanate prior to the end point in a titration?
Adding ammonium thiocyanate prior to the end point in a titration helps to detect the endpoint as it forms a red color complex with the metal ion being titrated. This complex formation signals the approach of the endpoint and allows for a more precise determination of the equivalence point in the titration.
What colour does lemon juice changes to when adding vinegar?
When lemon juice is mixed with vinegar, it does not change color significantly. Lemon juice is already acidic and adding vinegar, which is also acidic, will not produce a significant color change.
What is made by adding 4.5 moles of NH3 to 250ml of water.what is the molarity?
Adding 4.5 moles of NH3 to 250 mL of water will result in a solution with a volume slightly greater than 250 mL. To calculate the molarity, you need to know the final volume of the solution. Once you have the final volume, you can use the formula: Molarity = moles of solute / liters of solution.
Why does plain water boil faster than vinegar water?
Adding vinegar to water the effect of boiling point elevation occur.
Why addition of water to the vinegar does not effect the determination of its concentration in titration?
Yes, it DOES effect the concentration (mol per litre). This is because the volume (of solution, litres) has changed, when diluting, but not the total quantity (just moles of 'reacting' vinegar in the titration).
Does adding water change molarity?
No, adding water to a solution does not change the molarity of the solute. The molarity of a solution is calculated using the amount of solute and the volume of the solution, so diluting with water only changes the volume, not the amount of solute present.
Why back titration is used in complexometric titration?
Back titration is used in complexometric titration when the analyte reacts slowly with the titrant or when a direct titration is not feasible due to interference from other substances. By adding an excess of a known reagent to react with the analyte, followed by titration with another reagent to determine the excess, the concentration of the analyte can be accurately calculated.
How can the molarity of a solution be changed?
The molarity of a solution can be changed by adding more solute to increase the concentration or by adding more solvent to decrease the concentration.
What is the effect on the molarity of a solution of adding more solvent to a solution?
Adding more solvent to a solution decreases the molarity of the solution. This is based on the principle that initial volume times initial molarity must be equivalent to final volume times final molarity.
What is the relationship between molarity and molar mass in a solution?
The relationship between molarity and molar mass in a solution is that molarity is a measure of the concentration of a solute in a solution, while molar mass is the mass of one mole of a substance. Molarity is calculated by dividing the number of moles of solute by the volume of the solution in liters, while molar mass is calculated by adding up the atomic masses of the elements in a compound. The molarity of a solution can be used to calculate the amount of solute present, while the molar mass helps determine the amount of substance in a given mass.
Why is the indicator not added to the titration flask at the begging of the iodomettic titration?
Adding the indicator at the beginning of the iodometric titration can react with the iodine present, which can lead to errors in the titration results. By adding the indicator after most of the iodine has reacted, it ensures that the endpoint is more accurate and reliable.
How do you measure acetic acid in vinegar?
Acetic acid in vinegar can be measured using a method called titration. This involves adding a base solution of known concentration to the vinegar until the equivalence point is reached, indicated by a color change. The amount of base solution used can then be used to calculate the concentration of acetic acid in the vinegar.
Why addition of water to oxalic doesn't affect the molarity?
Adding water to a solution of oxalic acid does not affect its molarity because the total number of moles of oxalic acid in the solution remains the same. Molarity is calculated based on the number of moles of solute divided by the volume of the solution, so as long as the number of moles of oxalic acid stays constant, the molarity remains unchanged.
Determination the concentration of concentrated hydrochloric acid?
To determine the concentration of concentrated hydrochloric acid, you can perform a titration with a standardized solution of a base, such as sodium hydroxide. By carefully adding the base to the acid solution and monitoring the pH change using a pH indicator or a pH meter, you can identify the equivalence point and calculate the concentration of the acid using the volume and molarity of the base solution used in the titration.
What is a potentiometric titration?
Potentiometric titration is a technique used to determine the concentration of an analyte in a solution by measuring the potential difference between two electrodes in the solution. It involves adding a titrant solution of known concentration to the analyte solution until the equivalence point is reached, where the two solutions react completely. The equivalence point is determined by the inflection point on the titration curve, and the concentration of the analyte can be calculated from this data.
What is the molarity of iron III nitrate made from 10 ml of a 1.00 M solution and then diluted by adding 90 ml of water?
The molarity is 0,1 M.
