Chemistry, 08.07.2019 20:00, christophercordero15

Is li2o(s)+so2(g)→li2so3(s) a redox reaction

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answered: therealpr1metime45

No. The reaction is not a redox reaction.

Redox reaction is defined as a chemical reaction in which both oxidation and reduction of chemical species takes place. In such reactions, one of the chemical species undergoes reduction and other undergoes oxidation.

Here, oxidation means increase in oxidation state and reduction means decrease in the oxidation state.

The given reaction is as follows:

$Li_{2}O(s)+SO_{2}(g)\rightarrow Li_{2}SO_{3}(s)$

Here, the most stable oxidation state of oxygen is -2. Calculate the oxidation state of Li and S before and after the reaction completion.

On reactant side:

Let the oxidation state of Li in $Li_{2}O$ be x thus,

2x+(-2)=0

Or,

2x=2

Or,

x=+1

Similarly let the oxidation state of S in $SO_{2}$ be y thus,

y+2(-2)=0

Or,

y-4=0

Or,

y=+4

Thus, oxidation state of Li and S on reactant side is +1 and +4 respectively.

Now, the product formed is $Li_{2}SO_{3}(s)$ , it is an ionic compound thus it contains $Li^{+}$ and $SO_{3}^{2-}$ ions.

Thus, the oxidation state of Li will be +1.

Calculate the oxidation state of S in $SO_{3}^{2-}$ .

Let the oxidation state be z thus,

z+3(-2)=-2

Or,

z=-2+6=+4

The oxidation state of Li and S on the product side is also +1 and +4 respectively.

Since, the oxidation state of any of the chemical species is not changed (no oxidation or reduction take place), the reaction is not a redox reaction.

answered: Guest

water molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation:

answered: Guest

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