![KingOfLaBron23](/avatars/8552.jpg)
KingOfLaBron23
13.05.2021 •
Chemistry
The rate-determining step, rate laws, and the specific rate constant are all determined experimentally. True or false
Solved
Show answers
More tips
- S Style and Beauty How to Choose the Perfect Hair Color?...
- C Computers and Internet Best iPad Games: Our Opinion...
- A Animals and plants Man s Best Friend: Which Dog Breed Is the Most Friendly?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
- S Style and Beauty Learn how to tie a keffiyeh on your head like a pro...
- S Style and Beauty How to braid friendship bracelets?...
Answers on questions: Chemistry
- C Chemistry Use the following table to answer the question. strong acids weak acids weak bases strong bases hbr ch3cooh nh3 naoh hno3 hf nh4oh koh h2so4 hcn ca(oh)2 which of...
- C Chemistry As the temperature of a liquid increases, its viscosity most likely ? a. increases b. stays constant c. decreases...
- C Chemistry pls answer these questions for me!! pls :( I m having a rlly stressful time and I need help. I ll give u 15 points....
- M Mathematics In circle F with m EFG=106, find the m EHG...
- M Mathematics Four students were discussing how to find the unit rate for a proportional relationship Look at the graph of the relationship. Find the y-value of the point that...
- M Mathematics What is the product of...
- M Mathematics jess wants to buy a car but she cannot decide if she should buy a Honda or a Kia. The Honda costs $16,000 and depreciates at an annual rate of 8%. The Kia costs...
- A Advanced Placement (AP) Chapters 6-11 2.Why is Mrs.Johansen’d response to the German soldiers so cleaver?Include evidence from the novel....
- E English What is the role of syntax in this line? At this, after a second in which his head made the movement of a baffled dog s on a scent and then gave a frantic little...
- M Mathematics 4. In D ABC, ĐB ĐC then which is true? a) AC AB b) AB AC c) AB = AC d) None of them ...
Ответ:
The answer is: II.The endpoint is recorded when the solution is dark red in color rather than light pink.
The endpoint is the point at which the indicator changes colour in a colourimetric titration and that is point when titration must stop.
Phenolphthalein is colorless in acidic solutions and pink in basic solutions. If this indicator change color to dark red, more base is added and endpoint is not accurate.
If the the acid is spilled before titration, that does not make endpoint wrong and molar mass can be calculated.
In this example we can take acetic acid as carboxylic acid; basic salt sodium acetate CH₃COONa is formed from the reaction between weak acid (in this example acetic acid CH₃COOH) and strong base (in this example sodium acetate NaOH).
Balanced chemical reaction of acetic acid and sodium hydroxide:
CH₃COOH(aq) + NaOH(aq) → CH₃COONa(aq) + H₂O(l).
Neutralization is is reaction in which an acid (in this example vinegar or acetic acid CH₃COOH) and a base react quantitatively with each other.