Question | Answer |
The more electronegative the atom is, the more_____ the oxidation number is | Negative |
Which are the three most electronegative elements? | 1. Fluorine
2. Oxygen
3. Chlorine |
What are metal displacement reactions? | Reactions between a metal and a solution containing the ions of a different metal. |
What are displacement reactions also known as? | oxidation/reduction reactions, redox reactions |
What happens in a metal displacement reaction? | Metal converts the ion of another metal to the neautral atom, hence producing another solid. |
What is the electromotive force? What is it measured in? | EMF, Potential difference across electrodes, measured in volts. |
Standard electrode potentials are measured relitively to the standard_______ electrode | Hydrogen |
What voltage is the standard hydrogen electrode set at? | 0.0V |
Measurements in relation the the hydrogen electrode are done at which concentration, pressure and temperature? | Concentration: 1.00molL-1 (H+ ion)
Pressure: 100 KPa (H2 gas)
Temperature: 25C |
Consider a galvanic cell that produces the overall reaction Zn(s) + Cu2+ (aq) ---> Zn2+(aq) + Cu(s)
Find out the total E | +1.1V |
Draw the Zn(s)+Cu2+(aq) ---> Zn2+(aq) + Cu(s)
vertical lines for the potetial E | Zn(s)|Zn2+(aq)||Cu(aq)|Cu(s) |
Describe what happens when copper metal is placed in a solution of Ag ions | - Copper oxidises
- Ag reduces and gains an electron, forming ag metalic |