(2) 15 mL of HCl(aq) at 20.°C
(3) 10. mL of H2O(l) at 35°C
(4) 15 mL of H2O(l) at 30.°C
Answer: The correct answer is option 3.
Explanation: Average kinetic energy is defined as the energy of motion of the particles of a system. It is a measure of Kelvin Temperature.
Mathematically,
where,
K = kinetic energy of the molecules measured in joules.
R = Gas constant =
= Avogadro's number =
T = Temperature in kelvins.
Kinetic energy is directly proportional to the temperature of the system.
More the temperature, more will be the kinetic energy of the molecules.
Hence, the correct answer is Option 3.
The solubility of potassium chlorate (KCLO3) increases as the temperature increase. The increase in temperature is only applicable for most ionic and molecular solids. Since potassium chlorate is an ionic compound, this rule applies to it. The solubility however of other substance such as NaCl doesn’t change when you increase its temperature.
Metals experience plastic deformation when a specific amount of pressure and temperature is applied to them. Most metals have low specific heat. Because of their low specific heat, they easily get hot when heat is applied to them.
c. Sodium
b. Chromium
d. Iron