Homework Answers
This type of question have a lots of possible answers . So , it is better to pick up the correct answer within many choices .But , as here no choice is given . So , I hereby write a generalized answer of this question .
There can be 3 types of Buffers .
Type 1
Buffer of ( Weak acid + Conjugate base ) . An example is Acetic acid and Sodium Acetate .
CH3COOH+CH3COONa
Type 2
Buffer of ( Weak base + Conjugate acid ) . An example is Ammonium Hydroxide and Ammonium Chloride .
NH4OH+NH4Cl
Type 3
Salt of Weak acid and weak base . An example is - Ammonium Acetate .
CH3COONH4 .
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Which is a possible example of species that can comprise a buffer solution?
How can the possible forms into which a species can evolve be constrained? Which is most...
How can the possible forms into which a species can evolve be constrained? Which is most effective? Least effective? .
Histidine can be treated as a polyprotic acid for the purpose of making a buffer solution....
Histidine can be treated as a polyprotic acid for the purpose of making a buffer solution. The molecular weight histidine is 155.2 g/mol. You are asked to make 200 mL of a buffer solution containing 50 mM L-histidine. How much histidine do you add to the solution? Show your work. You adjust the pH of this solution to pH 5.0. Please draw the structures of the two primary histidine species at this pH. Circle the structure that is most prevalent...
A buffer solution of pH 5 is needed for an experiment which can be prepared by...
A buffer solution of pH 5 is needed for an experiment which can be prepared by mixing a weak acid and a strong base. Calculate the volume of a 0.56 M NaOH solution that needs to be added to 50.00 mL of a 0.18 M acetic acid (CH3COOH) solution to obtain a buffer solution of pH 5.00. Ka (CH3COOH) = 1.75 x lO'5]
Consider the set of chemicals: NaOH + NH3. If this pair generates a buffer solution, specify...
Consider the set of chemicals: NaOH + NH3. If this pair generates a buffer solution, specify the weak acid and the conjugate base that make up the major species of the buffer solution. Enter the answer in the same manner like in problem situation (for example: CH3CO2H, not H3CCOOH or CH3COOH). Enter the charge in parentheses (with multiplier first if charge is more than 1) right after the element symbol. For example, you should enter the formula of magnesium cation...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you add strong acid or strong base? The strong species is converted to weak species by reaction The pH change is smaller than you expect based on the amount of acid or base added Two reactions occurs-first a completion reaction, then an equilibrium reaction All three statements above accurately describe this situation Question 4 Can you create a buffer by mixing HNO3 with KOH? Yes-...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be prepared by combining a strong acid with a salt of its conjugate base VII. It can be prepared by combining a weak acid with a salt of its conjugate base IID It can be prepared by combining a weak base with its conjugate acid V. The pH of a buffer solution does not change when the solution is diluted. A buffer solution resists changes...
Give an example of the components of a buffer solution, including concentrations of the components. Then,...
Give an example of the components of a buffer solution, including concentrations of the components. Then, identify whether your particular solution will have a pH greater than or less than the pKa.
Is it possible to create a buffer with NH3 and HCl as your starting materials? If your answer is no, explain why a buffe...
Is it possible to create a buffer with NH3 and HCl as your starting materials? If your answer is no, explain why a buffer is not possible. If your answer is yes, which species would need to be in excess? Why? In either case, explain your reasoning with the use of a chemical equation.
Which of the following sets of chemicals can be used to prepare buffer solutions? For each...
Which of the following sets of chemicals can be used to prepare buffer solutions? For each one that can, identify the weak acid and its conjugate base. Include charge (if any) and phase. Enter "none" for both if a buffer is not possible. A.) Na2HPO4+HCl Is a buffer possible (Yes or No) and what is the weak acid and what is the conjugate base B.)NH4Cl+NH3 Is a buffer possible (Yes or No) and what is the weak acid and conjugate...
What is your buffer system? Which species is considered the conjugate base and which the weak...
What is your buffer system? Which species is considered the conjugate base and which the weak acid? Write out the chemical reaction equations of the conjugate acids and bases from phosphoric acid to the fully deprotonated phosphate species (3 total, leave out the Na and K, but be sure to include charges). 1- KH2PO4 & K2HP04
How can the possible forms into which a species can evolve be constrained? Which is most effective? Least effective? .
Histidine can be treated as a polyprotic acid for the purpose of making a buffer solution. The molecular weight histidine is 155.2 g/mol. You are asked to make 200 mL of a buffer solution containing 50 mM L-histidine. How much histidine do you add to the solution? Show your work. You adjust the pH of this solution to pH 5.0. Please draw the structures of the two primary histidine species at this pH. Circle the structure that is most prevalent...
Question 3 1 pts Which statement accurately describes what happens in a buffer solution when you add strong acid or strong base? The strong species is converted to weak species by reaction The pH change is smaller than you expect based on the amount of acid or base added Two reactions occurs-first a completion reaction, then an equilibrium reaction All three statements above accurately describe this situation Question 4 Can you create a buffer by mixing HNO3 with KOH? Yes-...
0, Which of the statements below about an acid-base buffer solution is/are true? IIt can be prepared by combining a strong acid with a salt of its conjugate base VII. It can be prepared by combining a weak acid with a salt of its conjugate base IID It can be prepared by combining a weak base with its conjugate acid V. The pH of a buffer solution does not change when the solution is diluted. A buffer solution resists changes...
What is your buffer system? Which species is considered the conjugate base and which the weak acid? Write out the chemical reaction equations of the conjugate acids and bases from phosphoric acid to the fully deprotonated phosphate species (3 total, leave out the Na and K, but be sure to include charges). 1- KH2PO4 & K2HP04
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