Table of Contents
- 1 What is the shape of the graph in conductometric titration between HCl and NaOH?
- 2 Why is the initial conductance of HCl high in case of HCl vs NaOH?
- 3 What is conductometric titration in chemistry?
- 4 Why does the value of conductance decrease with addition of HCl?
- 5 When titrating a solution of HCl with NaOH the suitable indicator to detect the equivalence point would be *?
- 6 Why conductometric titration is important?
- 7 How to identify the equivalence point of NaOH and HCl?
- 8 What is the titration curve when HCL is present in flask?
What is the shape of the graph in conductometric titration between HCl and NaOH?
The graph of the conductometric titration of HCl with NaOH is a “V†shape, which means the conductivity of the solution linearly decrease with respect to the volume of NaOH before the equivalence point. Please derive an equation to verify that theoretically the solution conductivity vs.
What is the shape of graph between conductance as a function of volume of NaOH added?
Thus plotting the conductance against the volume of NaOH added, a v shaped graph is obtained.
Why is the initial conductance of HCl high in case of HCl vs NaOH?
take, for example, the titration between a strong acid, say HCl, and a string base, say NaOH before NaOH is added, the conductance of HCl solution has a high value due to the presence of highly mobile hydrogen ions. As NaOH is added, H^(+) ions are replaced by relatively slower moving Na^(+) ions.
What is the shape of the graph in conductometric titration?
The curve resembles the weak acid – strong base conductance curve in the previous section up to the end point for the titration.
What is conductometric titration in chemistry?
Definition: The process of determining the quantity of a sample by adding measured increments of a titrant until the end-point is reached. The titration is monitored by measuring the conductance of the solution.
Which type of graph shows in Conductometry titration?
The results of the acid-base conductometric titration are graphed resulting in conductance curves….
- The end point (2) of these acid-base conductometric titrations is where 2 straight lines intersect.
- The end point as determined by the conductance curve corresponds to the equivalence point for the acid-base reaction.
Why does the value of conductance decrease with addition of HCl?
When we add a small amount of base to the acid, keeping the HCl(aq) in excess, the solution contains Cl-(aq), Na+(aq), but, there will be a decreased number of highly mobile H+(aq). Because the concentration of highly mobile H+(aq) has decreased, the conductance of the solution decreases.
Why the first conductance decreased and then increased in conductometric titration of strong acid vs strong base?
The initial increase in conductivity is due to the fact that the conductivity of the chloride ion is slightly greater than that of acetate ion.
When titrating a solution of HCl with NaOH the suitable indicator to detect the equivalence point would be *?
A strong acid- strong base titration is performed using a phenolphthalein indicator. Phenolphtalein is chosen because it changes color in a pH range between 8.3 – 10.
What will happen to the conductivity of a solution when HCl is titrated with NaOH?
The conductivity decreases as the NaOH is titrated into the HCl to form water. Once past the equivalence point, excess NaOH titrant will once again increase the conductivity.
Why conductometric titration is important?
Advantages of Conductometric Titration As the end point is determined graphically, results are more accurate with minimum error. It is used for analysis of turbid suspensions, weak acids, weak bases, mix of weak and strong acids etc.
What is conductometric titration?
CONDUCTOMETRIC TITRATION (DETERMINATION OF THE STRENGTH OF A SOLUTION OF HYDROCHLORIC ACID BY A STANDARD SOLUTION OF SODIUM- HYDROXIDE.) THEORY: Neutralization between a strong acid (HCl) and a strong base (NaOH) is represented by H+ + Cl-+ Na++ OH-= Na++ Cl-+ (H
How to identify the equivalence point of NaOH and HCl?
NaOH and HCl are strong alkali and acid respectively. To identify Equivalence point we use titration curves. According to the solution concentration we have to choose correct curve. 0.1 moldm -3 HCl 25cm 3 is placed at a beaker. 0.1 moldm -3 NaOH solution is added to the HCl solution drop by drop.
How do you plot the conductivity of HCL on a graph?
The conductivity is plotted against volume of HCl added. Titration is continued till a large excess of acid is added. You do not have to add drop-by-drop; 1 mL can be added at a time since we are obtaining the end point from the graph and do not have to look out for any sudden change in color.
What is the titration curve when HCL is present in flask?
In all beakers, aqueous HCl acid solution is present and aqueous NaOH solution is added to HCl solution. At the beginning (no addition of NaOH) pH is depends on the concentration of NaOH and when concentration of HCl decreases pH value increases. So we are done with titration curve when HCl is in the flask.