Baking soda breaks down when heated: 2 NaHCO₃(s) ⇌ Na₂CO₃(s) + CO₂(g) + H₂O(g), and the forward change is endothermic. Some NaHCO₃ is heated in a closed vessel until equilibrium is reached, with all three solids or gases present. Which statement about this equilibrium is correct?

ChemistryMediumHigh School (11–12)Chemical Reactions JEE Main

Baking soda breaks down when heated: $2\,\text{NaHCO}_3(s) \rightleftharpoons \text{Na}_2\text{CO}_3(s) + \text{CO}_2(g) + \text{H}_2\text{O}(g)$ , and the forward change is endothermic. Some $\text{NaHCO}_3$ is heated in a closed vessel until equilibrium is reached, with all three solids or gases present. Which statement about this equilibrium is correct?

← All Quizzes

← Pyridine, C₅H₅N, is a weak base: C₅H₅N + H₂O ⇌ C₅H₅NH⁺ + OH⁻, with Kb = 1.6 × 10⁻⁹ at 298 K. What is the pH of a 0.25 mol L⁻¹ solution of pyridine at 298 K? Take Kw = 1.0 × 10⁻¹⁴ and log 2 = 0.301.A student has 40.0 mL of 0.0250 mol L⁻¹ sulfuric acid, which gives both of its protons fully in water. What volume of 0.0500 mol L⁻¹ sodium hydroxide must be added to make the pH of the mixture exactly 12.00 at 298 K, in mL? Assume that the volumes add, and take Kw = 1.0 × 10⁻¹⁴. →

More onChemical Reactions

Discussion (0)

Loading…

Discussion (0)

Problems on this topic