The dealership wants to see you every three months.â. But he acknowledged that â3,000 miles strikes a deep chord with the consumer,â adding: âIt feels good to get an oil change. If you fill up the car with gas, wash it and change the oil, it runs better.
Since this measurement is at constant pressure (isobaric), the heat is equal to the change in enthalpy or \(\Delta H\). Note: be careful with the sign on \(\Delta H\). Heat out of the reaction is heat in to the calorimeter and vice versa.ince this measurement is at constant pressure (isobaric), the heat is equal to the change in enthalpy or \(\Delta H\). Note: be careful with the sign on \(\Delta H\). Heat out of the reaction is heat in to the calorimeter and vice versa.
The equilibrium constant for this reaction can be measured. [M(H 2 O) n] z+ + H 2 O [M(H 2 O) n-1 (OH)] (z-1)+ + H 3 O + Note the similarity of the equation for the hydrolysis of a hydrated cation with the equation for the ionization of a weak acid in aqueous solution. The Keq for the hydrolysis of a hydrated cation is analogous to the Ka for the ionization of a weak acid. Keq is an acid ionization constant.