A Bronsted - Lowry base is a substance which a. produces hydrogen ions in aqueou

Question

A Bronsted - Lowry base is a substance which a. produces hydrogen ions in aqueous solution. b. produces hydroxide ions in aqueous solution. c. donates protons to other substances. d. accepts protons from other substances. Which of the following is a diprotic acid? a. acetic acid b. hydrochloric acid c. phosphoric acid d. sulfuric acid What is the conjugate base of HSO_4? a. SO_4^2- b. H_2 SO_4 c. H_3 O^+ d. OH^- According to Bronsted - Lowry theory, acid - base reactions can be described a reactions. a. electrolytic b. electron transfer c. nuclear transfer d. proton transfer Which fluid is the most basic? a. Cytosol, pH 7.0 b. Milk of magnesia, pH 10.5 c. Blood plasma, pH 7.4 d. Gastric juice, pH 1.6

Explanation / Answer

Q1.

Bronsted Lowry base: any species that will accept H+ (protons) in solution, and makes pH higher (NH3 will accept H+ to form NH4+)

best answer is D

Q2.

diprotic acid --> has 2 protons

acetic acid --> 1 proton

HCl --> 1 proton

Phosphoric acid --> 3 protons

Sulfuric acid --> H2SO4, therefore 2 protons, choose D

Q3.

conjugate base --> will accept H+; thereore

HSO4- --> H+ + SO4-2

HSO4- is the acid, th econjugate base is then SO4-2

choose A

Q4.

the reacitons are proton transfer, iscne H+ is donated and accepted by substances

Q5.

most basic --> hihg pH

then, choose Milk of magnesi with pH = 10.5

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