Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. for example, a solution of hydrogen peroxide, h2o2, can be titrated against a solution of potassium permanganate, kmno4. the following equation represents the reaction: 2kmno4(aq)+h2o2(aq)+3h2so4(aq)→3o2( g)+2mnso4(aq)+k2so4(aq)+4h2o(l) a certain amount of hydrogen peroxide was dissolved in 100. ml of water and then titrated with 1.68 m kmno4. how much h2o2 was dissolved if the titration required 14.3 ml of the kmno4 solution?

0.408 g amount of hydrogen peroxide was dissolved in 100 mL of water.

Explanation:

Molarity of the solution = 1.68 M

Number of moles of ,n = 0.0240 moles

According to reaction 2 moles of reacts with 1 mole of , then  0.0240 moles of KMnO_4 will react with : moles of that is 0.0120 moles

Mass of =0.0120 moles × 34 g/mol=0.408 g

0.408 g amount of hydrogen peroxide was dissolved in 100 mL of water.

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: