The reaction is exothermic, causing an increase in the kinetic energy of the water molecules.
• In a calorimeter when the reaction takes place, and there is an increase in temperature recorded in the thermometer, it shows that the reaction is emitting heat to the surrounding, and such kind of reactions is known as exothermic reaction.
• With the mixing of aqueous solution of HCl and NaOH the temperature of the solution increases, this shows that the kinetic energy of the water molecules increases. As, kinetic energy is directly proportional to the temperature.
• With increase in temperature, the collision or vibration of molecules increases, thus, there is an increase in the kinetic energy between the molecules.
Thus, the reaction is exothermic, causing an increase in the kinetic energy of the water molecules.
To know more about:
The answer is that the substance loses or gains heat.
Answer:
The heat of the substance changes.
Explanation:
Substances can be made to change phases by fluctuating the temperature, the pressure, or both.
a. mass number: 24, charge: +2
b. mass number: 22, charge: neutral
c. mass number: 34, charge: -2
d. mass number: 34, charge: +2
The mass mass number is 22 and the charge of the atom is +2. The correct answer is option A
1. The mass number of the atom can be obtained as follow:
Mass number = number of proton + number of neutron
= 12 + 12
= 24
2. The charge of the atom can be obtained as follow:
Charge = number of protons - number of electrons
= 12 - 10
= +2
Thus, the mass number is 24 and the charge is +2. The correct answer to the question is option A
Learn more about mass number:
#SPJ6
Answer:
Explanation:
Formic acid (HCOOH) is a weak electrolyte when dissolved in water. In an aqueous solution of formic acid, it partially ionizes into its constituent ions. The solutes present in this solution are the ions produced during ionization.
The chemical equation for the ionization of formic acid (HCOOH) in water is as follows:
HCOOH (aq) ⇌ H⁺ (aq) + HCOO⁻ (aq)
In this equation:
HCOOH represents formic acid molecules.
H⁺ represents the hydrogen ions (protons) that are formed when a molecule of formic acid loses a hydrogen ion (H⁺).
HCOO⁻ represents the formate ion, which is the conjugate base formed when a molecule of formic acid donates a hydrogen ion (H⁺).
Since formic acid only partially ionizes in water, not all molecules of formic acid dissociate into ions. This is why it is considered a weak electrolyte.