193,036 views
14 votes
14 votes
When potassium iodide liquid is poured into lead nitrate solution (both clear solutions), a bright yellow solid, lead iodide, forms in a potassium nitrate solution. What are the signs that this is a chemical reaction? Check all that apply.

Heat is produced.
Light is produced.
Heat is absorbed.
Bubbles appear.
A precipitate forms.
The color changes.

User Matthias Winzeler
by
2.8k points

2 Answers

12 votes
12 votes

Let's see the chemical equation


\\ \sf\longmapsto KI+Pb(NO_3)_2\longrightarrow PbI_2+KNO_3+\Delta H

  • Heat is produced (Exothermic)
  • Light is produced
  • A precipitate forms(Yellow solid)
  • Color changes
User Artem Pelenitsyn
by
3.0k points
24 votes
24 votes

Answer: the person above is wrong

the correct answers are:

E

F

A precipitate forms.

The color changes.

User Pixelbitlabs
by
3.2k points