Sodium thiosulfate, na 2s 2o 3, is used as a "fixer" in black and white photography. identify the reducing agent in the reaction of thiosulfate with iodine. 2s 2o 3 2–( aq) + i 2( aq) → s 4o 6 2–( aq) + 2i –( aq)

Reducing agent in the given reaction is .

Explanation:

A reducing agent is defined as an element which tends to lose electrons to other element leading to an increase in its oxidation number.

In the given reaction, oxidation state of sulfur in is +2 and has 0 oxidation state.

In oxidation state of S is 2.5 and in oxidation state of I is -1.

Since, an increase in oxidation state of S is occurring from +2 to +2.5. Hence, it is acting as a reducing agent.

Thus, we can conclude that reducing agent in the given reaction is .

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?