Redox Exam Qs

Question 1

The properties of elements and their compounds are determined by their structure and bonding.

(i) In a dry container, a fluoride of silver reacts with sulfur to produce disulfur difluoride. Complete the equation for this reaction. State symbols are not required (1)

S8 + _AgF2 -> _S2F2 + _AgF

Answer 1

8 AgF2
4 S2F2
8 AgF

Question 2

S8 + 8AgF2 -> 4S2F2 + 8 AgF

i) Explain, by using the oxidation numbers of all the atoms, whether or not this is a redox reaction (3)

Answer 2

Oxidation number of Sulfur increases from 0 to +1 (OXIDATION)

Oxidation number of silver DECREASES from 2+ to 1+ (REDUCTION)

Fluorine does not change from -1

ITS A REDOX REACTION