Taylor mixes two liquids together in a beaker. A solid forms at the bottom of the beaker, and the liquid changes from pink to blue. Which of the following is true about the properties of the products?

The pH of the products can be different from the pH of the reactants.

The volume of the products must be exactly the same as the volume of the reactants.

The mass of the products can be different from the mass of the reactants.

The total number of atoms of the products can be different from the total number of atoms in the reactants

Question

Taylor mixes two liquids together in a beaker. A solid forms at the bottom of the beaker, and the liquid changes from pink to blue. Which of the following is true about the properties of the products?

The pH of the products can be different from the pH of the reactants.

The volume of the products must be exactly the same as the volume of the reactants.

The mass of the products can be different from the mass of the reactants.

The total number of atoms of the products can be different from the total number of atoms in the reactants

anonymous · Answer

The last one isn't true because atoms don't get created or destroyed in chemistry.
The third is true for the same reason; you can;t change the mass of a given quantity of particles.
The second isn't true because volume is dependant on pressure and temperature and as there is an energy change during a reaction, temperature changes.
The first is true because it happens in neutralization reactions.