How does the phosphate buffer (pH at 6.70) resist pH changes when strong acid or base is added?   a. H2 PO4- reacts with the strong acid, while H3PO4 reacts with the strong base b. H2 PO4- reacts with the strong base, while HPO42- reacts with the strong acid c. PO43- reacts with the strong acid, while HPO42- reacts with the strong base d. None of the above

Q: Consider the Ka information to answer parts a-b. Ka 7.2 x 10 * K 4.2 x 10- Formula Kat 6.3x 10 a.…

A: Answer:- This question is answered by using the simple concept of calculation of Ka and Kb value…

Q: Write balanced equations and expressions for Kap for the disso- lution of each ionic compound. a.…

A: a) BaSO4 BaSO4 ------> Ba2+  +  SO42-                        s              s KSP =  Xx Yy Sx+y…

Q: _____ 9.  What is the difference between a strong acid and a weak acid?   A strong acid can hold…

A: Given:- What is the difference between a strong acid and a weak acid? To find:- The correct option…

Q: Which statement regarding sulphuric acid is incorrect?   a. Concentrated sulfuric acid is about…

A: The acid given is sulphuric acid i.e. H2SO4.

Q: 4. Identify the Brønsted-Lowry in each reaction: Acid & Base, and also the conjugate acid and…

A: According to Bronsted Lowry concept:Acid is a substance that releases H+ in aqueous solutions. After…

Q: WHat salt (and formula) results from the following neutralisation reaction? 2KOH(aq) + H₂S (aq) ???…

A: Given an incomplete neutralization reaction. Determine the missing product.

Q: A buffer solution is made that is 0.431 M in HClO and 0.431 M in NaClO . (1) If Ka for HClO is…

A: pH of the buffer solution is determined by Henderson equation,…

Q: Which of the following salts produces a neutral solution when dissolved in water?   a. NaClO 4…

A: NaOH + HClO4 ---> NaClO4 + H2O  SB          SA                Salt         Water HF      +   KOH…

Q: Which of the following is/are true when CH3COOH is dissolved in water? I.            At…

A:

Q: Consider the reaction below: Pb(NO3)4(aq) + 4 NaOH(aq) ----> _ Compound A + _ Compound B (OR Pb(N…

A:

Q: A 500.0 ml solution of a buffered solution has a pH = 7.4 a. What is the [H3O+]? b. If a few of…

A: pH:The  is a unit of measure which describe the degree of alkanity or acidity of a solution.

Q: Buffers are made from weak conjugate acid-base pairs. In Part A, step 4, of the procedure a weak…

A: Buffer solution contains two species coexisting with each other in equilibrium, that is weak acid…

Q: Consider the following salts: KNO3 ● ● (CH3NH3)Br ● LICI ● NaCH3COO NH4CI ● NaNO₂ ● a. For each…

A: Salt on dissolution in water produces cations and anions.  Salt is formed by the mixture of acids…

Q: 10. Indicate whether following reactions is a strong, weak, or nonelectrolyte represented in the…

A:

Q: An aqueous solution contains 1x 10^-5 M hydrogen ions. How much hydronium ions does it contain?*

A: Hydrogen ions or hydronium ions are considered to be same.

Q: 1) Consider HA (a strong acid) and HB (a strong base).  a. Write a balanced chemical reaction for…

A: Strong acid ionizes completely and increase H3O+ in aqueous solution. HA being a string acid it…

Q: react

A: At pH = 12,  HPO4^2-(aq) + H2O(l) <-----> PO4^3-(aq) + H3O+(aq)  When an external acid H3O+…

Q: _______6. Na2 CO3   forms alkaline solution when dissolved in water. Why? Because water hydrolysis…

A:

Q: If 44.0mL of 0.20M HCI solution is titrated with 30.0mL of NaOH. what is the concentration of the…

A:

Q: Chadwick the chemistry student carries out a titration by adding an aqueous solution of NaOH to an…

A: Chadwick the chemistry student carries out a titration by adding an aqueous solution of NaOH to an…

Q: Which of the following can be mixed together in water to produce a buffer solution? Choose all…

A: Answer:Buffer solution is a type of solution that resists the change in its pH on adding small…

Q: Which of the following is a weak base?   a. KOH   b. NaOH   c. Cd(OH)2   d. Ca(OH)2

A:

Q: Of the following solutions, which has the lowest buffering capacity? OA. 0.521M HC2H3O2 and 0.217M…

A: A buffer is a solution which resist any change in pH on adding a small amount of acid or base .it is…

Q: decimal places If the pH calculated in b. was the blood pH of an actual patient, would you say this…

A:

Q: 7. A 0.0560 g quantity of acetic acid is dissolved in water to make a 50.0 mL solution. The pka of…

A: pH of given acetic acid solution can be determined using Ka and concentration of solution.

Q: 11. Which one has the lowest concentration of H3O* ions? A. 1.0 x 101M HCI B. 1.0 x 102 M HCI В. С.…

A: The of a solution is a figure that expresses the acidity or the alkalinity of a given solution. If…

Q: Which of the following constitute a buffer? A. NH3 and KNO3 B. HCN & NaCN C. HF & NaCl…

A: The NH3 form buffer when it mixed with NH4X (where X- ion comes from strong acid). The HF form…

Q: Write a balanced equation for the dissociation into ions of each of the following soluble salts in…

A: Step 1:a. For the dissociation of NaNO3​ in aqueous solution, the balanced equation is:…

Q: A solution contains 0.339 M HA (K₂5.39-10) and 0.771 M NaA. What is the pH of this solution? What is…

A:

Q: hydrochloric acid solution has a pH value of 3. Which of the following substances would increase the…

A: On addition of an acid pH of the solution decreases as acid gives H+ ions in the water while on…