Table of Contents
- 1 What is adsorption indicator example?
- 2 Which is adsorption indicator?
- 3 Which of the following is an example of absorption?
- 4 Which method is based on precipitation of adsorption indicator?
- 5 What is absorption example?
- 6 Why is adsorption always exothermic?
- 7 Which is the best definition of absorption indicator?
- 8 What makes the pink colour of the adsorption indicator?
What is adsorption indicator example?
Quick Reference A type of indicator used in reactions that involve precipitation. The yellow dye fluorescein is a common example, used for the reaction NaCl(aq)+AgNO3(aq) → AgCl(s)+NaNO3(aq) As silver nitrate solution is added to the sodium chloride, silver chloride precipitates.
Which is adsorption indicator?
Adsorption Indicators: The phenomenon of adsorption is used to detect the endpoints of precipitation titrations. In such titrations, dyestuffs like eosin, fluorescein, alizarin red etc, are used as adsorption indicators.
Is fluorescein an adsorption indicator?
Fluorescein is an adsorption indicator.
Which adsorption indicator is used for the titration of chloride?
silver nitrate
A rapid, accurate method for the microdeterminationof chlorides in spinal fluids and in alcohol-ether extracts of serum has been described, in which dichlorofluorescein is used as an adsorption indicator and standard silver nitrate is used for titration.
Which of the following is an example of absorption?
Water on calcium chloride is an example of absorption.
Which method is based on precipitation of adsorption indicator?
The precipitation titration in which silver ion is titrated with Halide or thiocyanate ions in presence of adsorption indicator is called as fajan’s method.
What is adsorption titration?
Definition: The process of determining the quantity of a sample by adding measured increments of a titrant until the end-point, at which essentially all of the sample has reacted, is reached.
Which indicator is used for the titration of weak acid and weak base?
Choice of Indicators
| Types of titration | Indicators |
|---|---|
| Strong acid-strong base | Phenolphthalein is usually preferred because of its more easily seen colour change. |
| Weak acid-strong base | Phenolphthalein is used and change sharply at the equivalence point and would be a good choice. |
What is absorption example?
Absorption is defined as the process when one thing becomes part of another thing, or the process of something soaking, either literally or figuratively. An example of absorption is soaking up spilled milk with a paper towel. A paper towel takes up water, and water takes up carbon dioxide, by absorption.
Why is adsorption always exothermic?
Adsorption is always exothermic. Adsorption is an exothermic process since surface particles of the adsorbent are unstable and when the adsorbate is adsorbed on the surface, the energy of adsorbent decreases, and this results in the evolution of heat. Therefore, adsorption is always exothermic.
Which of the following is used as an adsorption indicator?
Eosin is an example of Absorption Indicator.
What is the difference between Volhard and fajans method?
Mohr method is the reaction between silver ion and halide ion in the presence of chromate indicator, while Volhard method refers to the reaction between excess silver ions and halide ions. Fajans method, on the other hand, refers to the adsorption reaction between silver halide and fluorescein.
Which is the best definition of absorption indicator?
absorption indicator – an indicator used in reactions that involve precipitation. indicator – (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction.
What makes the pink colour of the adsorption indicator?
At the end point, no Cl − ions are left in solution and negative fluorescein ions are then adsorbed, giving a pink colour to the precipitate. The technique is sometimes known as Fajan’s method. From: adsorption indicator in A Dictionary of Chemistry »
Do you need bookmap to use absorption indicator?
To gain access to the Absorption Indicator, a subscription to the Bookmap Global+ version is required. Please access the Absorption Guide to understand more about the settings and installation. 01. S&P e-mini Classic front running buying absorption before the large level of liquidity transacts.
Which is the best definition of an indicator?
indicator – (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction.