When solid sodium hydroxide NaOH is dissolved in water it un

When solid sodium hydroxide naoh is dissolved in water it un - GED Prep

Question

When solid sodium hydroxide (NaOH) is dissolved in water, it undergoes an exothermic reaction. What is the correct equation for the reaction?

Answers

NaOH (s) +H₂O (l) + Heat →Na (aq) +OH^-(aq)
correct

NaOH (s) +H₂O (l)→ Na⁺(aq) +OH^-(aq) + Heat
NaOH (s) + HNO₃(l) → Na (aq) + OH(aq) + Heat
NaOH (s) + H₂O (l) + Heat→ Na^- (aq) + OH⁺ (aq)

Explanation

An exothermic reaction is a chemical change whereby energy is released in the form of heat or light.

In the given question, when solid sodium hydroxide (NaOH) is dissolved in water, it dissociates into positive sodium ions and negative hydroxide ions. The reaction is referred to as an exothermic reaction because it gives out energy in the form of heat.

View Full Course Content Try our Free Questions

No Payment Cards Needed

Ged Test Prep exam

Normally $120

$69/month