Equilibrium shifts to the right.
OPTION A
Answer:
A. Being black in color
Explanation:
Physical properties are properties that can be observed without having to change the chemical composition of the substance.
So, an observation about the color of the object would be physical.
Therefore, A is correct because there are no chemical changes involved, while the other 3 answer choices involve some type of chemical change.
Answer:
A rapid reaction is distinguished by having a relatively small value of activation energy.
Explanation:
Chemical kinetics is involved in determining the rate of a reaction, how fast or slow a reaction will occur in a particular condition. The factors affecting the rate of reaction determining whether it will be a rapid reaction includes nature of the reactants, temperature, pressure, surface area of solid state, catalysts, concentration and so on. Based on temperature, temperature affects the collision frequency of a reaction and this contributes to a portion of the increased rate of reaction. At a given temperature, the rate of a reaction depends on the magnitude of the activation energy, pre-exponential factor A, molar gas constant, R, and temperature. This is true based on the Arrhenius equation K = Ae^-Ea/(RT). So therefore, from the equation, it is revealed that at small activation energies, reaction rate is rapid and slow at high activation energies.
