One of its characteristics is that it has a sour taste. What is it?
Acid
100
Give the classification of a chemical that dissociates in water to produce OH− ions and cations
Base
100
Write the formula for the conjugate base of H2PO4–.
HPO42–
100
Which of these acids is stronger, H2SO4 or HSO4–?
H2SO4
100
What is the concentration of H+ in a 2.5 M HCl solution?
2.5
200
It reacts with bases to form ionic salt and water through a reaction called:
Neutralization
200
One of the theories used to define acids and bases is based on what happens in a reaction. Which one is it?
Brønsted and Lowry Theory
200
Identify the conjugate acid of H2O
Conjugate base of H3O+
200
Arrange the acids HOCl, HClO3, and HClO2 in order of increasing acid strength
HOCl < HClO2 < HClO3
200
Calculate the H+ ion concentration in a 8.8 x10^–4 M Ca(OH)2 solution
5.7 x10–^12
300
This substance is also known as alkalis
Base
300
This theory/definition does not explain acid–base reactions that take place outside aqueous solution. Which one is it?
Arrhenius theory
300
What is the conjugate base of HI
Conjugate acid of I-
300
Arrange the following molecules in order of increasing acid strength?
H2S, H2O, H2Se
H2O < H2S < H2Se
300
What is the pH of an aqueous solution that contains 5.3x 10^17 OH– ions per liter of solution?
7.94
400
This molecular compound contains structures that react with H+
organic/molecular base
400
One of the problems with this theory/definition is that it does not explain why molecular substances, such as NH3, dissolve in water to form basic solutions – even though they do not contain OH– ions. Whose theory is it?
Arrhenius Theory
400
What is the conjugate base of NH3
NA
400
Arrange the following conjugate acids of these weak bases in order of increasing acid strength.
C2H5NH3+ C5H5NH+ C6H7OH
C2H5NH3+< C5H5NH+ < C6H7OH
400
What mass of ammonium chloride must be added to 250. mL of water to give a solution with pH = 4.85? [Kb(NH3) = 1.8 x 10^–5]
4.7 g
500
This chemical changes color depending on the solution’s acidity or basicity. What is it?
Indicator
500
What is the term used to define a substances that can act as either an acid or a base
Amphoteric
500
When 2.0 x 10^–2 mole of nicotinic acid (a monoprotic acid) is dissolved in 350. mL of water, the pH is 3.05. What is the Ka of nicotinic acid?