Preparation of murexide indicator for Ca measurement - Physics …
Apr 21, 2017 · To prepare murexide indicator, first dissolve 0.1g of murexide powder in 100mL of sodium hydroxide solution. Then, add 1mL of this solution to 100mL of distilled water to create the final murexide indicator solution. How is murexide indicator used to measure Ca concentration? To use murexide indicator for Ca measurement, add a small amount of ...
Why Are Only 1-2 Drops of Indicator Used in a Titration Experiment?
Nov 30, 2006 · In summary, During a titration experiment, a gr11 student used an indicator, Phenolphthalein, and stopped the titration when it turned light pink. The student is wondering why only 1-2 drops of indicator are used. The reason is because the indicator has a high molar absorptivity, making it unnecessary to use more drops for a qualitative assessment.
Equivalence point in acid-base titration - Physics Forums
May 15, 2016 · In acid base titration, we try to neutralize the analyte by adding sufficient titrant and observing the color change in the indicator. But if the analyte is neutralized, then it must always be at ph 7. Why is it that we use indicator of different ranges to check equivalence point?
Measuring the concentration of dye - Physics Forums
Oct 9, 2008 · Preparation of murexide indicator for Ca measurement. Apr 23, 2017; Replies 2 Views 16K.
Why does my Patton-Reeder indicator immediately turn blue?
Dec 13, 2019 · What is the purpose of using a Patton-Reeder indicator? The Patton-Reeder indicator is used to detect the presence of calcium ions in a solution. It is commonly used in scientific experiments and in various industries, such as water treatment and food production. Can the Patton-Reeder indicator turn blue for reasons other than high Ca2 ...
How Much Substance in One Drop of Solution? - Physics Forums
Apr 28, 2014 · Preparation of murexide indicator for Ca measurement. Apr 23, 2017; Replies 2 Views 16K.
How we determine conductivity of powder? - Physics Forums
Apr 17, 2007 · Preparation of murexide indicator for Ca measurement. Apr 23, 2017; Replies 2 Views 16K.
Calcium Concentration in Milk: EDTA Titration Problem and …
Nov 15, 2010 · In summary, a sample of powdered milk weighing 1.450 g was mixed with a buffer of pH 11.5 and Calagmite indicator. It required 31.62 mL of 1.539x10^-2 M EDTA to reach the end-point color change. The concentration of calcium in the milk can be calculated using the equation M1V1 = M2V2.
Titration Help: Standardize HCl Using Oxalic Acid & CaCOH Solution
Jun 19, 2005 · The oxalic acid solution is added to the HCl until the endpoint is reached, which is indicated by a color change in the indicator. The volume of oxalic acid used is then used to calculate the concentration of the HCl solution. What is …
EDTA Complexometric Titration failed why? - Physics Forums
Oct 31, 2011 · The next part of the experiment involved using 0.2-0.3g of calcium carbonate (dissolved with 1 mL 3M HCl and 4 mL DI water). We mixed this solution with the indicator solution prepared in the titration of the blank. We titrated this solution using EDTA, expecting somewhere between 30-50 mL to be needed.