standard reduction potentials.....
The equilibrium charge-exchange reaction between hydrogen and deuterium is given by: H2 + 2D+ (arrows) D2 + 2H+ Using the standard reduction potentials for each half reaction given below, determine which isoptope of hydrogen (H or D) prefers to be in the +1 state in aquesous solution under standard conditions. 2D+ + 2e- (righ ...continues
Complete and balance following reaction: As(s)+ClO3^-(aq) (right arrow) H3AsO3(aq)+HCLO (aq) I can : split into 1/2 reactions balance all but H and O balance O by adding H20 balance H+ by adding protons balance charge by adding electrons Now I am stuck when you add equations to get electrons to cancel out, and what y ...continues
Okay, my first posting was: human blood plasma is approximately 0.70% NaCl by weight, what is the ionic strength? The posting answer was: 0.5(0.70*(1)^2 + 0.70*(-1)^2= 0.70 This does not seem correct according to the study guide from my prof, which shows.... human blood plasma is approximately 0.85% NaCl by weight, what i ...continues
Derive expression for extent of rxn as function of temperature.
If given the change in entropy and the change in enthalpy, derive and expression for the extent of the reaction as a function of temperature.
I solved part a of this problem easily. The rest of this problem has me stumped. I already have the solutions to these problems, but it's arriving at these solutions that has made me pull my hair out!
Use of spectrophotometry to determine Ka
This involves the use of the equation; pH = pKa + log (activity coefficent of anion) + log (D -Dha)/(Da- - D), from the equation it is neccesary to plot pH against log(D - Dha)/(Da- -D). This appears to be the straight line eqn which can be solved (y = mx + c) for the function pKa + log (activity coefficient of anion ...continues
apply steady-state approximation
consider the following mechanism for the reaction of nitric oxide with hydrogen: 1) 2NO ----> N2O2 <---- 2) N2O2 + H2 -----> N2 + H2O2 3) H2O2 + H2 ----> 2 H2O a) apply the steady state approximation to one or more of the intermediates and thence derive the rate law for the overall reaction. B) unde ...continues
A solution of sucrose in water freezes at -50 degrees Celsius. What would the osmotic pressure be of this solution at 29 degrees Celsius? You can assume the density of this solution is 1 g/ml if you want.
What would the boiling point of water at an altitude of 2 miles be if 28 grams of hot chocolate mix is added to 1 cup of water before heating? (1 cup = 236.6 ml)? Assume that Kb is pressure independent. If you wanted the hottest possible hot chocolate, should you add the mix before or after heating the water? Assume that the ...continues
What is the complete wavefunction for n=2, L=0, and m(sub L)= 0? What radius of the orbital specified is required to contain 95% probability of finding an electron? *I just need to know the numerical answer.
