Chapter 2, Problem 13MIC

endothermic reactions absorb energy from their surroundings. If chemicals for an endothermic reaction are added to water, the water's temperature drops (the water gets colder! Ever use a first aid "cold pack", where you squeeze a pouch to release chemicals inside and the pouch becomes ice cold? That's an endothermic reaction!) For endothermic reactions, when you use the equation Q = m x C x (delta T), the "Q" is a negative number because the water LOSES energy. The answer is negative because the water temperature drops, the CHANGE registered on the thermometer is negative. Type a negative number to answer this question: if your water starts at 19 degrees Celsius, and a couple of minutes after adding chemicals the water temperature becomes 15 degrees, the value of "delta T" is degrees Celsius. *

For the equation H20 (g) --> H20 (1) answer the following questions: Q1) Is it endothermic or exothermic? Q2) How does energy flow? Q3) What happens to the molecules? Format BIU

Reactants: Sodium Hydroxide (NaOH) Potassium Permanganate (KMnO4) Glucose (C12H22O11) What is the purpose of the sodium hydroxide in the redox reaction experiment?