What is oxidized and what is reduced in this reaction? Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s) Ag is reduced and Cu is oxidized. Cu is reduced and Ag is oxidized.

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Explanation:

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.