Question : 41.Characterize EACH of the three given statements as being TRUE : 1309628

 

 

41.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The two members of a Bronsted-Lowry conjugate acid-base pair will always differ from each other by one unit of charge.

(2) An equivalent of an ion is always the charge on the ion divided by two.

(3) In an acid-base titration, the indicator changes color when the reaction between it and added acid is complete.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

42.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The terms proton and hydrogen ion are used interchangeably in acid-base discussions.

(2) Some hydroxide ion is present in all acidic solutions.

(3) The two active species in a buffer are a strong acid and its conjugate base.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

43.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) The total number of hydrogen atoms present in one molecule of an acid is the basis for classifying it as monoprotic, diprotic, triprotic, etc.

(2) In all Bronsted-Lowry acid-base reactions, the acidic species reacts with the basic species to produce water.

(3) A buffer is a solution that experiences zero change in pH when a small amount of acid or base is added to it.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

44.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) A Bronsted-Lowry base must contain an atom that can accept a proton.

(2) Both acidic and nonacidic hydrogen atoms may be present in an acid molecule.

(3) The molar hydronium ion concentration in a solution of pH 6.0 is 1 ? 10-6.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

45.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:

(1) All rainfall, even in unpolluted areas, is acidic.

(2) Blood plasma, interstitial fluid, and intracellular fluid, the three general types of body fluids, all contain electrolytes.

(3) Blood plasma is slightly acidic because ions it contains undergo hydrolysis.

a.All three statements are true.

b.Two of the three statements are true.

c.Only one of the statements is true.

d.None of the statements is true.

 

 

 

46.Select from the response list the compound or ion that best fits the description: conjugate base of H3PO4.

a.H3PO4c.HPO42–

b.H2PO4–d.PO43–

 

 

 

47.Select from the response list the compound or ion that best fits the description: conjugate acid of HPO42–.

a.H3PO4c.HPO42–

b.H2PO4–d.PO43–

 

 

 

48.Select from the response list the compound or ion that best fits the description: will form a buffer with PO43–.

a.H3PO4c.HPO42–

b.H2PO4–d.PO43–

 

 

 

49.Select from the response list the compound or ion that best fits the description: reacts with H3O+ to form HPO42–.

a.H3PO4c.HPO42–

b.H2PO4–d.PO43–

 

 

 

50.Select from the response list the compound or ion that best fits the description:reacts with OH– to form HPO42–.

a.H3PO4c.HPO42–

b.H2PO4–d.PO43–