Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Science and Practice Test
Practice Question
Placing solid ammonium nitrate, NH4NO3, in a container of water causes an endothermic reaction. The result is ammonium hydroxide, NH4OH, and nitric acid, HNO3. Which diagram shows the correct equation for the reaction?
Answer Choices
- A: NH4OH + HNO3 → NH4NO3 + H2O + energy
- B: NH4NO3 + H2O + energy → NH4OH + HNO3
- C: NH4NO3 + H2O → NH4OH + HNO3 + energy
- D: NH4OH + HNO3 + energy → NH4NO3 + H2O
Correct Answer: B
Rationale: An endothermic reaction absorbs energy, so energy should be on the reactant side. The reaction NH4NO3 + H2O → NH4OH + HNO3 requires energy input, making B the correct equation.