Animalscaretips
- Why do we use methyl orange indicator in finding the alkalinity of water?
- Which is the commonly used indicator for the determination of total alkalinity of water?
- Why do we use two indicators in carbonate and bicarbonate ions determination?
- What ions give methyl orange alkalinity?
- Why both phenolphthalein and methyl orange are used as indicators?
- What is methyl orange indicator?
- What are the Colours of methyl orange in alkaline and acidic media?
- Why phenolphthalein is used first?
- Why phenolphthalein is used in alkalinity titration?
- Why can Hydrocaride ions and bicarbonate ions not be mixed?
- What do bicarbonate ions do?
Why do we use methyl orange indicator in finding the alkalinity of water?
A measure of the total amount of hydroxyl ions in a solution as determined by titration with standardized acid and methyl orange indicator. The alkalinity test is a well-known water-analysis procedure to estimate hydroxyl ion, carbonate ion and bicarbonate ion concentrations.
Which is the commonly used indicator for the determination of total alkalinity of water?
Total alkalinity is determined by titration of the water sample to the endpoint of the methyl orange, bromocresol green, or bromocresol green–methyl red indicators, approximately pH 4.5. The difference between the two is the bicarbonate alkalinity.
Why do we use two indicators in carbonate and bicarbonate ions determination?
Water Alkalinity is mainly due to carbonate and bicarbonate salts in a water sample, the carbonate ion has two end points, one from carbonate to bicarbonate and another from bicarbonate to carbon dioxide. Methyl orange end point yellow to red.
What ions give methyl orange alkalinity?
This can only happen when both OH– and CO32– ions are not present in water. Alkalinity is present due to HCO3– ion only which can be determined using methyl orange indicator and called methyl orange alkalinity (M). 2. P = ½ M; indicates that only CO32– ions are present.
Why both phenolphthalein and methyl orange are used as indicators?
In the case of acid base reaction, chemical indicators like methyl orange or phenolphthalein are used to determine end point. These indicators changes color with the change in the pH of the solution. ... Reactant/ analyte : It is the solution whose concentration is not known.
What is methyl orange indicator?
Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium.
What are the Colours of methyl orange in alkaline and acidic media?
- Methyl orange shows a yellow color when it is mixed with an alkaline solution (a solution that is a mixture of base solids mixed with water, i.e. a basic solution) and shows a red color in an acidic solution. Hence, option A is the correct option.
Why phenolphthalein is used first?
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. It will appear pink in basic solutions and clear in acidic solutions. ... Neutralization is the basis of titration.
Why phenolphthalein is used in alkalinity titration?
The alkalinity of water can be determined by titrating the water sample with Sulphuric acid of known values of pH, volume and concentrations. ... For the pH more than 8.3, add phenolphthalein indicator, the colour changes to pink colour. This pink colour is due to presence of hydroxyl ions.
Why can Hydrocaride ions and bicarbonate ions not be mixed?
[H+] corresponds to standard HCl whilst hydroxide, carbonate and bicarbonate are the alkalinity causing ions present in water. ... Thus OH-and HCO3- ions cannot exist together in water and hence can be concluded that all the three OH- , HCO3- ,CO32 ions cannot exist together [7,8].
What do bicarbonate ions do?
It raises the internal pH of the stomach, after highly acidic digestive juices have finished in their digestion of food. Bicarbonate also acts to regulate pH in the small intestine.
