half-life of first order process
A reacrant undergoes a dissociation reaction A r arrow 2B which follows first order kinetics. The initial concentration of reactant A is .4000 M and after 75.00 hr the concentration of A decreases to 0.0816 M. Determine the half-life of the first order process. There must be a simple equation for this, but my textbook must a ...continues
rate constant with temp changes
rearrangement of methyl isonitrile to acetonitrile has activation energy of 25.0 kJ/mol and a rate constant of 8.1*10^-4s-1 @ 80 Celsius. what is the value of the rate constant @ 255.0 celsius?
Another rate constant with temp changes problem!
What is the value of the rate constant at 380 celsius given that the rate constant at 80 celsius is 7.2*10^-2s^-1
A weak base with Kb=4.240*10^-7 is added to water to make a 2.00*10^-1 M solution. what is the pH? Since Kb is small, can assume that the dissociation is small relative to initial concentration of weak base.
rate law for proposed mechanism..
for the reaction: 2NO(g) + O2 arrow 2NO2 (g) the following mechanism has been proposed to explain the experimental rate law 1. 2NO arrows N2O2 (fast) 2. O2 + N2O2 arrow 2NO2 (slow) Give the rate law for the proposed mechanism. If necessary, use the pre-equilibrium assumption to determine an expression for ...continues
calculate the cell potential @ T=25 celsius assuming ideal solutions Fe | Fe^2+ (1.43 *10^-5) || Fe^2+ (5.00*10^-4M) | Fe The double line represents salt bridge. I need detailed description of what they are talking about here- I haven't a clue!!
stoichiometry/balancing redox reactions
I need help how to balance redox reactions in a systematic way. I already have the answers, I need to know step-by-step how to get there...thanks! Example: complete and balance the following reaction: H2O2+Cl2O7 (right arrow) Clo2^- +O2 which occurs in basic solution. Also- how do you tell what was oxidized and what was re ...continues
what is soluability constant, Ksp of reactant..
The chemical reaction representing the soluability of AGBr is: AgBr (right and left arrow) Ag^+ +Br^- This can be written as: AgBr+ 1e^- (right arrow) Ag + Br^- Eo=.071 V Ag (right arrow) Ag^+ +1e^- Eo=-.800 Using this data, what is the soluability product constant, Ksp, of AgBr @ 25 celsius??
Human blood plasma is approximately 0.70% NaCl by weight. What is the ionic strength of blood plasma? I need a detailed explanation please- not just numbers! I am using this as a study guide for my final. Thnaks!!
The oxidation of FADH2 to form FAD: FADH2 (right arrow) FAD + 2H+ + 2e- this has a potential E (prime)=0.219 under biological conditions (pH=7.00) @ 298 K. What is the potential for this process under standard conditions? Please- I need a detailed explanation- not just numbers- I am using this as a study guide for my final ...continues
