The redox reaction is as follows 3Ca + 2Cr³⁺ --> 3Ca²⁺ + 2Cr in the oxidation reaction the species donates electrons and becomes oxidised. the oxidised species donates electrons to the other species and reduces the other species hence its called the reducing agent as it reduces the other species. the oxidised species' oxidation number increases. in the reduction reaction, the species takes in electrons and becomes electrons and its called the oxidising agent as it takes in electrons from the oxidised species thus oxidising the other species. the reduced species' oxidation number decreases.
in this case , Ca becomes oxidised Ca --> Ca²⁺ + 2e oxidation number of Ca increases from 0 to +2. since it reduces Cr from Cr³⁺ to Cr, Ca is called the reducing agent
For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct.
A water wave traveling in a straight line on a lake is described by the equation y(x,t)=(3.75cm)cos(0.450cm?1x+5.40s?1t) where y is the displacement perpendicular to the undisturbed surface of the lake.
