(12 pts) A piece of aluminum is added to a beaker containing a beautiful blue copper(II) sulfate (sulfate SO_(4)^(2-) ) solution. Soon afterwards, copper metal starts precipitating out of the solution and the solution loses its color.
A. (4 pts) Write an equation describing the transfer of electrons as the copper(II) ion is converted to copper metal. Is this oxidation or reduction?
B. (4 pts) Given your answer in part A, is the aluminum being oxidized or reduced? Write the appropriate electron transfer equation.
C. (4 pts) How many electrons are transferred during this process?
(6 pts) Consider the following reaction: CH_(4)(g)+2O_(2)(g)->CO_(2)(g)+2H_(2)O(l);Delta H=-891kJ. Calculate the enthalpy change when 1.00g of methane, CH_(4)(g), is burned in excess oxygen.
16.(12 pts) A piece of aluminum is added to a beaker containing a beautiful blue copper(ll)sulfate and the solution loses its color. A. (4 pts) Write an equation describing the transfer of electrons as the copper(II) ion is converted to copper metal. Is this oxidation or reduction?
B. (4 pts) Given your answer in part A,is the aluminum being oxidized or reduced? Write the appropriate electron transfer equation.
C. (4 pts) How many electrons are transferred during this process?
17.(6 pts)Consider the following reaction: CH4(g)+2O2(g) -> COz(g)+2H20(l); H=-891 k] Calculate the enthalpy change when 1.00g of methane, CH4(g), is burned in excess oxygen.