Electrochemistry Concepts and Applications

Why does zinc coating prevent rust on steel nails?

• Zinc is more decorative than steel

• Zinc is more likely to oxidize than iron

• Zinc makes the nail harder

• Zinc prevents moisture contact

In a standard cell potential calculation, what indicates a spontaneous reaction?

• A negative cell potential

• A positive cell potential

• Zero cell potential

• An incomplete electron transfer

Which substance is considered the strongest oxidizing agent?

• Gold

• Lithium

• Fluorine

• Silver

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

When calculating cell potential, the half-cell with the ______ reduction potential will undergo reduction.

• Lowest

• Highest

• Neutral

• Intermediate

What happens when a cell's calculated potential is negative?

• The reaction stops

• The reaction is spontaneous in reverse

• More electrons are needed

• The cell becomes unstable

In the Ag/Sn voltaic cell example, what serves as the anode?

• Silver

• Tin

• Water

• Electrons

Why is the standard reduction potential table useful?

• To predict reaction spontaneity

• To measure temperature

• To calculate mass

• To determine pH

Which metal cannot reduce zinc ions according to the potential table?

• Copper

• Nickel

• Silver

• Magnesium

What determines whether a substance is a strong reducing agent?

• Its molecular weight

• Its ease of oxidation

• Its temperature

• Its color

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the lithium and water reaction, what is produced?

• Lithium hydroxide only

• Hydrogen gas and lithium ions

• Water and oxygen

• Pure lithium

Tags

NGSS.MS-PS1-2