Problem 1
Explain how molecules account for the purple cabbage leaves.
Problem 1
Why is it useful to know the value of the equilibrium constant \(K\) for a reversible process?
Problem 1
What does it mean when a system is in a state of dynamic equilibrium?
Problem 2
What does a double arrow in a chemical equation tell you?
Problem 2
Explain how to write the equilibrium-constant equation for a reversible process.
Problem 2
How does the equilibrium constant \(K\) distinguish between strong and weak acids?
Problem 3
Provide examples to support the claim that phase changes are reversible.
Problem 4
Provide examples to support the claim that processes involving the breaking and forming of inter molecular attractions are reversible.
Problem 5
Provide examples to support the claim that processes involving breaking and making of several covalent bonds are sometimes not reversible.
Problem 5
Write equilibrium-constant equations for each reversible process. a. \(\mathrm{NH}_{3}(a q)+\mathrm{H}_{2} \mathrm{O}(l) \leftrightharpoons \mathrm{NH}_{4}^{+}(a q)+\mathrm{OH}^{2-}(a q)\) b. \(\mathrm{Na}_{2} \mathrm{SO}_{4}(s) \leftrightharpoons 2 \mathrm{Na}^{+}(a q)+\mathrm{SO}_{4}^{2-}(a q)\) c. \(\mathrm{C}_{2} \mathrm{H}_{4}(g)+\mathrm{H}_{2}(g) \leftrightharpoons \mathrm{C}_{2} \mathrm{H}_{6}(g)\)
