Questions: 4) Mixing two colorless solutions gives a yellow solution. The evidence for this chemical reaction is: (1point) (a) The emission of light. (b) The formation of a gas: (c) The formation of a solid. (d) Color change.

4) Mixing two colorless solutions gives a yellow solution. The evidence for this chemical reaction is:
(1point)
(a) The emission of light.
(b) The formation of a gas:
(c) The formation of a solid.
(d) Color change.

Transcript text: 4) Mixing two colorless solutions gives a yellow solution. The evidence for this chemical reaction is: (1point) (a) The emission of light. (b) The formation of a gas: (c) The formation of a solid. (d) Color change.

Solution

Solution Steps

Step 1: Identify the Evidence of Chemical Reaction

When two colorless solutions are mixed and the resulting solution turns yellow, it indicates a chemical change. The key evidence for this chemical reaction is the change in color.

Step 2: Evaluate the Options

Option (a) "The emission of light" is not applicable here as there is no mention of light being emitted.
Option (b) "The formation of a gas" is not applicable as there is no mention of gas formation.
Option (c) "The formation of a solid" is not applicable as there is no mention of a solid being formed.
Option (d) "Color change" is applicable as the solution changes from colorless to yellow.