Potentiometry

Question 1

________ has both electric magnetic fields. It comes from natural and man-made sources.

Answer 1

Radiation

Question 2

Electromagnetic radiation is _______ or ______ mainly by several gases in the Earth’s atmosphere, among the most important being water, vapor, carbon dioxide and ozone.

Answer 2

reflected, absorbed

Question 3

__________ is a procedure that uses magnetic fields to stimulate nerve cells in the brain to improve symptoms of major depression.

Answer 3

Transcranial magnetic stimulation (TMS)

Question 4

Defined as the amount of work/ energy needed to move a unit of electric charge from a reference point in an electric field.

Answer 4

Potential Current / Electric Field Potential / Electrostatic Potential

Question 5

Device or substance that can generate electrical energy from chemical reactions occurring in it.

Answer 5

Electrochemical Cell

Question 6

What are the 4 types of electrochemical cells?

Answer 6

Galvanic or Voltaic Cells
Eletrolytic Cells
Fuel Cells
Chargeable & Non-rechargeable Cells

Question 7

Amount of work to move a unit of charge

Answer 7

Potential

Question 8

Flow of electricity, amount of electricity flowing in a circuit

Answer 8

Current

Question 9

Property of subatomic particles that causes to release force placed in electric and magnetic field

Answer 9

Charge

Question 10

•Changes chemical energy into electrical energy
• Anode is - ve
• Spontaneous reaction occurs

Answer 10

Galvanic Cell

Question 11

•Changes electrical energy into chemical reaction
• Anode is +ve
• Non-spontaneous reaction occurs

Answer 11

Electrolytic Cell

Question 12

Uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electriciry.

Answer 12

Fuel Cell

Question 13

“Single use” and cannot be recharged.

Answer 13

Primary Batteries

Question 14

Rechargeable

Answer 14

Secondary Batteries

Question 15

He introduced the term potentiometry in connection to potential determinations.

Answer 15

W. Ostwald

Question 16

He discovered that there is charge in potential across a glass membrane of different acidity.

Answer 16

Frit Harber

Question 17

She discovered that a otential difference exists between the two sides of a thin glass membrane.

Answer 17

E. Cremer

Question 18

He is the inventor of Potentiostat

Answer 18

A. Hickling

Question 19

Analysis measuring amount of matter transformed during an electrolysis (amount in coulomb)

Answer 19

Coulometry

Question 20

A dynamic electrochemical reaction which determines number of electrons during redox reaction.

Answer 20

Voltametry

Question 21

An electronic device that measures and controls the potential difference between two electrodes.

Answer 21

Potentiostat

Question 22

Are reference electrodes calculated in terms of H+ ions.

Answer 22

Standard Hydrogen Electrodes (SHE)

Question 23

It maintains neutrality of solution and allow free flow of ions from one cell to another.

Answer 23

Salt Bridge

Question 24

(True or False): Kolthoff and Sanders showed that pellets made from AgCl could be used to determine the concentration of Cl+.

Answer 24

False

Question 25

(True or False): The potentiometric precision is assessed in potential measured within a repeatability of ±0.1mV

Answer 25

True

Question 26

(True or False): The most common class of potentiometric biosensors are the so- called indicator electrodes.

Answer 26

False

Question 27

(True or False): A fuel cell uses the chemical energy of hydrogen or other fuels to cleanly and efficiently produce electricity.

Answer 27

True

Question 28

(True or False): Examples of secondary batteries include nickel-cadmium (NiCd), lead acid, and lithium-ion batteries

Answer 28

True

Question 29

(True or False): Primary batteries are “single use” and cannot be recharged.

Answer 29

True

Question 30

(True or False): In Galvanic Cell, Anode is negative - ve

Answer 30

True

Question 31

(True or False): In electrolytic cell, Cathode is positive -ve.

Answer 31

False

Question 32

(True or False): Potentiometry is a measurement of potential, current, or charge in an electrochemical cell serves as the analytical signal.

Answer 32

True

Question 33

(True or False): Potentiometry follows standard, max concentration of 10-5 - 10-10 M to a minimum concentration of 0.1-1 M.

Answer 33

False

Question 34

A reaction occurring at the electrode where electricity flows moves into the cell.

Answer 34

Anode Reaction

Question 35

A reaction occurring at the electrode where electricity is given out or flows out of the cell.

Answer 35

Cathode Reaction

Question 36

A reaction occurring at the electrode where electricity is given out or flows out of the cell.

Answer 36

Cathode Reaction

Question 37

A biosensor type where an enzyme is immobilized on an ion-selective electrode to detect specific analytes.

Answer 37

Potentiometric Biosensor

Question 38

The equation fundamental to potentiometry, relating cell potential to the concentration of electroactive species.

Answer 38

Nernst Equation

Question 39

Electrodes with a stable, known electrical potential, used as a reference point in potentiometric measurements.

Answer 39

Reference Electrodes

Question 40

The electrode that completes the electric circuit and provides a reference potential in potentiometric measurements.

Answer 40

Counter Electrodes

Question 41

Electrochemical cells divided into two separate compartments that allow for controlled potential measurements.

Answer 41

Half-Cell System

Question 42

In _____ no current passes between the electrodes, and the concentrations of species in the electrochemical cell remain.

Answer 42

Static method

Question 43

The largest division of interfacial electrochemical methods is the group of ______ in which current flows and concentrations change as the result of a redox reaction.

Answer 43

Dynamic methods