What would be the hydroxyl ion concentration of an acid solution for which [H+] =2.5 x 10-4
I have been working on this problem and am not sure of my answer. Heat of reaction for KOH + HCL=KCL + HOH is 13.9 cal. KOH 114.8cal HCL 39.6cal HOH 68.4cal. What would be the heat of formation for KCL.
Physical chemistry: What is the partial pressure of the molecular hydrogen in the container?
A 400 L container at temperature of 4 celsius initially contains 0.25 mol He gas. Molecular hydrogen, which is a gas at 4 celsius is added until total pressure is 9.38*10^-2 atm. What is the partial pressure of the molecular hydrogen in the container?
I need to know how to solve the following problem: Take a deep breath of air and assume it is one liter of air. What is the probability that the liter of air contains a molecule from Julius Caesar's last breath (also assume a liter of air)? Assume that the nitrogen that existed in the atmosphere ~ 2000 years ago is that whi ...continues
determine equilibrium partial pressure
An evacuated 4.0 L vessel containing soilid sulfur is initially charged with 1.30 atm hydrogen gas at 44.9 celsius. Eventually, the following equilibrium is achieved: H2(gas)+ S(solid) = H2S (gas) (the 2's are subscripts, i.e. 2 atoms of hydrogen) Determine the equilibrium partial pressure of molecular hydrogen in the vessel ...continues
determine change of G and equilibrium constant
For the following reaction: N2O4 (gas) = 2 NO2 (gas)(the = is actually equilibrium sign, and the first and last 2, and 4 are little numbers, i.e 2 atoms of nitrogen, sorry) For which change of G at 25 celsius = +5.4kJ At 25 deg celsius the gas in reaction vessel hasd dark brown color. Determine change G and the equili ...continues
determining amount of chemical consumed
The combustion of butane in oxygen at 25 celsius to form water and carbon dioxide follows the chemical reaction: 2 C4H10(gas) + 13 O2(gas) = 8 CO2 (gas) (the = is supposed to be a forward arrow) The reaction is carried out in an excess oxygen atmosphere, and 1585 kJ heat is released. Determine the amount of butane consumed. ...continues
Write the rate law that would describe the rate of product formation for each of the following systems a. if the second step is rate-controlling and the first step is preequilibrium… H,Br-C=C-Br,H + R3N <-> H,Br-C=C-Br + R3NH+ (H and Br are connected to C with sigle bonds; equilibrium constants are k1 and k-1) H,Br ...continues
A particular reaction was found to depend on the concentration of the hydroxyl ion [OH-]. The initial rates varied as a function of initial pOH as follows: pOH 2.699 2.398 2.097 initial rate 1.600e-2 6.400e-2 2.560e-1 (M/s) predict the initial reaction rate when pOH is 2.155. How do ...continues
Arrhenius activation energy problem..
The rate constant increases by a factor of 2.00 when the temperature is increased from 80 C to 115 C. estimate the arrhenius activation energy. How to solve when don't have a value for A or k????
