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Are there specific buffer systems that should be chosen based on the pH that must be maintained?
Yes, the best buffering power is obtained by chosing a buffer of which the pKa value of its constuent acid is as close as possible the same as the desired pH to be bufferd.
Example: Acetic acid / acetate (1:1) is a good buffer at pH 4.8 (or roughly between 4.1 and 5.4) because pKacid= 4.77
Of coarse there are other properties to take into account, e.g. not reactive to solution components, stable, non-toxic in Life Science experiments, etc.
What else can I help you with?
When preparing a buffer of a given pH an acid should be chosen whose pKa is close to the desired pH?
Yes this is true. This is because for a buffer solution, Ka = [H+] ( [acid] ) / [salt] ) As such by mathematical manipulation, [H+] = Ka ( [salt]/ [acid] ) We must keep in mind that a good buffer must have equal concentrations of acid and salt so as to be able to resist pH change in both directions, by absorbing protons and hydroxide ions. As such the value of ( [salt] / [acid] ) will be 1 and can be cancelled from the equation. [H+] = Ka And, pH = pKa :)
Is chosen an abstract noun?
The noun 'chosen' is a word for a group of people "elected" (selected, singled out) for a purpose, honor, or destiny.The noun 'chosen' when referring to specific people is a concrete noun.The noun 'chosen' when referring to the concept of a select group is an abstract noun.The noun "chosen" is used with plural verbs, and often with the determiner "the."The word 'chosen' is the past participle, past tense of the verb to choose (chooses, choosing, chosen). The past participle of the verb is also an adjective (my chosen field, the chosen representative).
What type of breeding is the technique in which two specific organisms are chosen for reproduction to see what traits their offspring display?
Selective breeding is the technique in which two specific organisms are chosen for reproduction to see what traits their offspring display. This process aims to promote certain desirable traits in the offspring and has been used for centuries to enhance qualities in plants and animals.
What is metallic pipe?
A metallic pipe is a hollow cylinder made from metal, typically used to transport fluids or gases in plumbing, industry, or infrastructure systems. Metallic pipes are known for their strength, durability, and ability to withstand high pressure and temperature conditions. They come in various metals such as steel, copper, and aluminum, each chosen for specific applications based on their unique properties.
What is agarose concentration?
Agarose concentration refers to the amount of agarose powder mixed with buffer solution to make a gel for DNA electrophoresis. Typical concentrations range from 0.5% to 2%, with higher concentrations providing better resolution for larger DNA fragments. The chosen concentration depends on the size of the DNA fragments being analyzed.
What do political systems do?
Deal with government: how it is chosen and set up, and what it does.
HTML which is not a way that state central committee members are chosen?
State central committee members are typically chosen through methods such as party primaries, caucuses, or appointments by party leadership. However, they are not commonly chosen through random selection or lottery systems. Additionally, methods like public referendums or general elections for these specific positions are also not standard practices.
Did the empire chosen make specific mistakes or was it's decline a natural part of the lifestyle of an empire?
It depends on the empire chosen.
Name two political systems working in your chosen countries?
Capitalism!!!! Nothing else works...
Why the hygiene issue is chosen in child care?
You need to be more specific
Where can one purchase conference call systems?
Conference call systems can be purchased online. Some systems depending on which one is chosen can be free. Some are just down loaded to your PC or devices that are being used.
What is the price of a hennessey venom gt?
The Hennessey Venom GT has a starting price of around $1.2 million. However, the final cost can vary significantly depending on customizations and specific configurations chosen by the buyer. Limited production and exclusivity often lead to higher market values, especially for well-maintained models.
Why was the pope chosen?
There have been 266 popes so you need to be more specific.
How old was the pope when he was chosen?
Which of the 266 popes (2013) are you referring to? Please be specific.
Who advises the president on important decisions?
His cabinet and several advisors chosen by him for specific advice
What is a type of literature in which words are chosen and arranged in specific ways to create an effect?
poetry
Who is raven rileys biological parents?
Raven Riley's biological parents are not publicly disclosed, as she has maintained a level of privacy regarding her family background. As a public figure, she has chosen to focus on her career rather than her personal life. For more specific information, it's best to refer to credible sources or interviews where she might discuss her family.
