it's ACIDS, BASES and REDOX baby!

Question 1

A sample of rainwater turns methyl orange yellow and litmus red. What is a possible pH?

Accepted Answer

4.5

Question 2

Unlike an acid, an aqueous solution of a base

Accepted Answer

contains more OH- than H+

Question 3

What color is phenolphthalein in a basic solution?

Accepted Answer

pink

Question 4

What will be the concentration of 150. mL of a 2.4 M NaOH solution if it is diluted to 200. mL?

Accepted Answer

1.8 M

Question 5

The correct oxidation half reaction occurring at the anode is

Accepted Answer

Cu(s) -> Cu+2 + 2e-

Question 6

According to one acid-base theory, an acid is an

Accepted Answer

H+ donor

Question 7

A voltaic cell can be identified because it has a ______________ which ________________________

Accepted Answer

salt bridge; allows the transfer of ions

Question 8

According to the Arrhenius theory, the only negative ions in an aqueous solution of a base are

Accepted Answer

OH-

Question 9

In the redox reaction, Cl2 + H2O -> HClO + HCl, the hydrogen is

Accepted Answer

neither oxidized nor reduced

Question 10

____ occurs at the anode while ____occurs at the cathode in every electrochemical cell.

Accepted Answer

oxidation, reduction

Question 11

Which statement describes what occurs in the reaction: Cu(s) + 2Ag+1(aq) -> Cu+2(aq) + 2Ag(s)

Accepted Answer

both mass and charge are conserved

Question 12

Which substance could be a salt produced during a neutralization reaction?

Accepted Answer

CaCl2

Question 13

An aqueous solution turns litmus red. The pH of this solution could be

Accepted Answer

4

Question 14

What are the two oxidation states of nitrogen in the compound NH4NO3?

Accepted Answer

-3 & +5

Question 15

The two types of electrochemical cells are __________________ & __________________

Accepted Answer

voltaic & electrolytic

Question 16

Pure water is 100x more acidic than a solution with a pH of

Accepted Answer

9

Question 17

Which substance can act as an Arrhenius acid in an aqueous solution?

Accepted Answer

HI

Question 18

If 35.0 mL of HNO3 is added to 30.0 mL of 0.15 M NaOH. How many sig digs will your answer have?

Accepted Answer

2

Question 19

What is the oxidation number for oxygen in OF2?

Accepted Answer

+2

Question 20

Consider the equation. 2Fe+3 + Sn+2 -> 2Fe+2 + Sn+4. Which species is the oxidizing agent?

Accepted Answer

Fe+3

Question 21

The given diagram is an electrolytic cell because

Accepted Answer

there is a battery forcing the reaction

Question 22

The oxidation number of an uncombined Group 2 metal is...

Accepted Answer

0

Question 23

What is the oxidation number of carbon in NaHCO3?

Accepted Answer

+4

Question 24

Which substance is always produced by a neutralization reaction?

Accepted Answer

water

Question 25

Chlorine has the highest oxidation number in which of the following molecules?

Accepted Answer

HClO4

Question 26

When the switch is closed, the _______ will be the anode because oxidation occurs.

Accepted Answer

Mg (s)

Question 27

In a redox reaction, the species reduced

Accepted Answer

gains electrons & is the oxidizing agent

Question 28

A redox reaction always involves

Accepted Answer

a change in oxidation number

Question 29

Which equation represents a redox reaction?

Accepted Answer

2KClO3 -> 2KCl + 3O2

Question 30

What volume of 2.0 M NaOH (aq) is needed to completely neutralize 24 milliliters of 1.0 M HCl?

Accepted Answer

12 mL

it's ACIDS, BASES and REDOX baby!

Questions 30

it's ACIDS, BASES and REDOX baby!

Questions 30