Exam 7: Acids and Bases

A water solution is found to have an OH^- concentration of 6.3 × 10−¹⁰. The solution would be classified as:

What is the pH of a 1 × 10^-1 M solution of CaCl? Enter a numerical value.

H⁺, H₃O⁺, and OH⁺ are different ways of representing the species that causes a solution to be acidic.

The chemical equation for the reaction of the base, ethoxide, CH₃CH₂O^-, with water would show the products:

Arterial blood gases (ABGs) were drawn on your patient. The following are the some of the results: Respiratory Rate (RR) 10 breaths/min; pH 7.3; and Pressure of CO₂ 58 torr. The following questions are a basic step-by-step guide in evaluating ABGs. a. If the normal range is 12 - 24 breaths/min , is this patient breathing within a normal range, hyperventilating, or hypoventilating? b. Is this pH level on the acidic or basic side of the normal range? c. Is this pressure of CO₂ level within normal range, high, or low? d. With the above findings, what is this patient experiencing?

If a patient were in diabetic ketoacidosis (DKA), would you expect their pH level to be high or low?

Using the above table, fill in the blank with the appropriate integer (1 ,2, 3,...) indicating the buffer and/or the letter indicating the formula below. -In Buffer 1, the missing base component is _________________________.

Consider the following three buffer reactions. Buffer 1: protein-H⁺ and protein Buffer 2: H₂CO₃ and HCO₃^- Buffer 3: H₂PO₄^- and HPO₄^2- Fill in the blank with the appropriate integer (1, 2, or 3) to indicate the buffer system described. -Buffer______________________ is the most effective regulator for a pH of 7.2.

Nitroaniline (C₆H₆N₂O₂) is a weak base. This would indicate that the pH of a 0.010 M solution of nitroaniline will be less than 7.

The molar concentration of H₃O⁺ in an aqueous solution would be increased by the addition of KOH.

The buffer solution in the flask was prepared using one of the substances shown below. citric acid (pK_a 3.08) NaH₂PO₄ (pK_a 7.21) NH₄Cl (pK_a 9.25) Using the pH meter and solution shown in the image below, complete the following statements using one of the terms below. increase decrease remain constant citric acid NaH₂PO₄ NH₄Cl -If KOH were added to the buffer solution the pH of the solution would __________.

Which of the following is present in pure water?

In the reaction of NaOH with HBr, a spectator ion is:

In converting from the pH of a solution to the corresponding H₃O⁺ concentration, the following equation should be used. [H₃O⁺] = 10^-pH

Using the above table, fill in the blank with the appropriate integer (1 ,2, 3,...) indicating the buffer and/or the letter indicating the formula below. -In Buffer 2, the missing acid component is_______________________.

What is the pH of a solution prepared by dissolving 0.400 g of HCl in enough water to produce 300.0 mL of solution?

Consider the following three buffer reactions. Buffer 1: protein-H⁺ and protein Buffer 2: H₂CO₃ and HCO₃^- Buffer 3: H₂PO₄^- and HPO₄^2- Fill in the blank with the appropriate integer (1, 2, or 3) to indicate the buffer system described. -Buffer 1 works in conjunction with buffer ____________________to regulate the pH of intracellular fluid.

Examine the structure given below How many acidic hydrogen atoms are present? Enter a numerical value (1, 2, 3, ...).

A buffer is composed of ammonia (NH₃) and ammonium chloride (NH₄Cl). When base is added to the buffer, which of the following reactions occurs?

Adipic acid has the formula given below. This is a polyprotic acid.