What happens when HCl is titrated with NaOH?
During the course of the titration, the titrant (NaOH) is added slowly to the unknown solution. As it is added, the HCl is slowly reacted away. The point at which exactly enough titrant (NaOH) has been added to react with all of the analyte (HCl) is called the equivalence point.
How do you titrate NaOH with HCl?
Place the flask on a white tile or piece of clean white paper under the burette tap. Add the hydrochloric acid to the sodium hydroxide solution in small volumes, swirling gently after each addition. Continue until the solution just turns from yellow-orange to red and record the reading on the burette at this point.
What are thermometric titration used for?
During thermometric titration, the enthalpy or entropy occurring during a defined specific chemical reaction is used to determine the endpoint. The temperature sensor used is unaffected by chemicals or sample constituents.
What is the best indicator for HCl and NaOH?
A suitable indicator for the titration of the weak acid CH3COOH(aq) and the strong base NaOH(aq) would be either thymol blue (pH range 8.0 – 9.6) or phenolphthalein (pH range 8.3 – 10.0).
What is end point in conductometric titration?
Titration. Conductometric titration is a type of titration in which the electrolytic conductivity of the reaction mixture is continuously monitored as one reactant is added. The equivalence point is the point at which the conductivity undergoes a sudden change.
Which instrument is used in thermometric titration?
In thermometric titrations the instrument used is thermistor. Thermistors are small solid state devices which exhibit relatively large changes in electrical resistance for small changes in temperatur.
Which indicator is used for titration of NaOH and HCl?
phenolphthalein
(A) In general phenolphthalein is used as an indicator for the titration of weak acid (CH3COOH) and strong base (NaOH).
Which indicator is suitable for the titration of HCl and NaOH?
For a weak acid vs strong alkali titration, phenolphthalein is the most suitable indicator. This is so because the last drop of added alkali brings the pH of the solution in the range in which phenolphthalein shows sharp colour change.
Which titration is known as Argintometric titration?
The titrations with silver nitrate are known as argentometric titration. This titration is carried out for chloride, cyanide, and bromide ions.
What are the main sources of error in a thermometric titration?
Several factors can cause errors in titration findings, including misreading volumes, mistaken concentration values or faulty technique. Care must be taken as the solution of the known concentration is introduced into a specific volume of the unknown through laboratory glassware such as a burette or pipette.
Why is NaOH used in titration?
First of all, solid NaOH absorbs water from the air, so accurately weighing a sample during the preparation of a solution is impossible. Once the NaOH solution has been standardized and its concentration is well-known, it can be used to titrate other acid solutions such as HCl.
What happens when HCL and NaOH mix?
When HCl (Hydrochloric acid) and NaOH (Sodium Hydroxide are mixed they form Common salt (NaCl) and Water (H2O). This is an neturalization reaction as the acid and base react together to form a salt and water.
What is the reaction of HCl and NaOH?
The reaction of HCl (aq), a strong acid, with NaOH (aq), a strong base, is an exothermic reaction. The big idea for most calorimetry themed demonstrations is energy is conserved. Energy cannot be created or destroyed, but it can be exchanged.
What is the indicator for HCl and NaOH?
A better indicator for NaOH and HCl would be bromothymol blue, which changes colour between pH 6.0 – 7.6, from yellow to blue.