Why is phenolphthalein used as an indicator? In basic solution,the acidic proton in the phenolphthalein will be captured by the hydroxide ions and forms a quinoid structure which is pink in colour. So, this appearance of pink colour will help to identify the end point of this titration. ...
Learn about acid-base indicators. Understand what acid-base indicators are, how they work to determine if a solution is acidic or basic, and see the examples. Related to this Question What is the function of the indicator phenolphthalein?
In industry, acid-base neutralization is used in waste treatment to neutralize acidic or basic wastewaters. In laboratory experiments, acid-base neutralization reactions can be observed through various indicators. For instance, phenolphthalein is a common indicator that turns pink in basic solutions and...
Suppose you chose phenolphthalein, which changes color at the end point from colorless (acidic) to pink at pH 8.5 The Ka of hydrocyanic acid, HCN, is 5.0 x 10-10. What is the pH of 0.050 M HCN(aq)? A certain indicator, HIn, has Ka = 1.0 ...
What is the use of phenolphthalein? Phenolphthalein is often used asan indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes. ...
Which compound forms an acidic solution when dissolved in water? (a) NH_4Cl (b) NaCl (c) KNO_2 (d) Ca(NO_3)_2 If you have a 27% glucose solution, what percentage of that solution is water? Consider a 25.4% (w/w) sodium bicarbonate aqueous solution. a. What is the solvent in...
pH Scale the strength of acids & bases in measured on the pH scale pH of an acidic solution: ___ the more acidic a solution, the closer its pH is to ___ pH of a neutral solution: ___ pH of a basic solution: ___ the more basic a solution, the close...
A Acidic B Basic C Neutral D Cannot be predicted Video Solution Text SolutionVerified by Experts The correct Answer is:AUpdated on:21/07/2023 | ShareSave Answer Step by step video, text & image solution for "40 ml "(N)/(10)HCl solution is mixed with 60 ml of (N)/(20)KOH solution...
Which 0.1 M solution will turn phenolphthalein pink? A. HBr(aq) B. CO2 (aq) C. LiOH (aq) D. CH3OH (aq) How much 6.0M sodium nitrate solution should you use to make 0.585 L of a 1.2 M solution? If the pH of a 0.15 M solution of HF is 2.00, what is the Ka and percent...
Your graphs, which will be used as a template for your lab data, should look like:28 When you titrate a weak acid with a strong base, such as NaOH, the reaction will go essentially to completion, giving an acidic solution until the equivalence point OH– + HC2H3O2 C2H3O2–+ H2O(1) ...