$ 4 The value of K, for hypochlorous acid, HCIO, is 3.50x10-8. Write the equation for the reaction that goes with this equilibrium constant. (Use H30+ instead of H*.) 000 000 F4 R F Submit Answer % + 5 T G FS Use the References to access important values if needed for this question. Retry Entire Group 9 more group attempts remaining A Cengage Learning | Cengage Technical Support 6 MacBook Air Y F6 H 87 & + F7 U * 8 F8 9 K >> F9 O 0 F10 P 4) F11 Previous + Next> Save and Ex F12 1

Most naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.

For a chemical reaction to take place, some or all chemical bonds in the reactants must break, and new chemical bonds must form among the participating atoms to create the products. Write a simple chemical equation of your own choice, and list the bonds that must be broken and the bonds that must form for the reaction to lake place.

When a mixture of hydrogen and bromine is maintained at normal atmospheric pressure and heated above 200. °C in a closed container, the hydrogen and bromine react to form hydrogen bromide and a gas-phase equilibrium is established. Write a balanced chemical equation for the equilibrium reaction. Use bond enthalpies from Table 6.2 ( Sec. 6-6b) to estimate the enthalpy change for the reaction. Based on your answers to parts (a) and (b), which is more important in determining the position of this equilibrium, the entropy effect or the energy effect? In which direction will the equilibrium shift as the temperature increases above 200. °C? Explain. Suppose that the pressure were increased to triple its initial value. In which direction would the equilibrium shift? Why is the equilibrium not established at room temperature?