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Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 7.00 102 mL of solution and then titrate the solution with 0.128 M NaOH. C6H5CO2H(aq) + OH-(aq) C6H5CO2-(aq) + H2O() What are the concentrations of the following ions at the equivalence point? Na+, H3O+, OH- C6H5CO2- M Na+ M H3O+ M OH- M C6H5CO2- What is the pH of the solution?
When sodium reacts with chlorine, 411 kj/mol is released. Calculate the amount of heat released if 1.37 mol of sodium form.
Derive the appropriate expression of the internal pressure piT for the berthelot gas. Should the internal pressure piT of the berthelot gas be greater than equal to or less than zero? Explain your choice(s)
Determine if the concentration of formaldehyde and methanol as measured in water will convert to its relative organic acids? If there is a measured concentration of formaldehyde and methanol in a 1000L solution of water at temperature = 180 degrees..
At a given temperature, 1.40 atm of H2 and 2.03 atm of I2 are mixed and allowed to come to equilibrium. The equilibrium pressure of HI is found to be 1.305 atm. Calculate Kp for the reaction at this temperature.
Important information about pH and Molarity, You add 5 drops of .100 M HCl to 100ml of "pure" water. Assuming that the volume of one drop is .035ml, calculate the expected pH of the resulting solution
It takes 78.2 J of energy to raise the temperature of 45.6 g of lead by 13.3 oC. What is the specific heat capacity of Pb? What is the molar heat capacity of Pb.
When 20 mL of a 120 mL stock solution containing 2 M BaF2 is diluted to 80 mL, what is the concentration of F- in the new solution.
gas expand isothermally and reversibly from 10 bar to 1 bar at t= 25 celcius. calculate q,w, delta u,h,s,a,g. please show how u got the equations
For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH of the solution within the receiving flask when 7.87 mL of HBr is added.
For the elementary process N2O5 (g) = NO2(g) + NO3 (g) the activation energy (Ea) and overall Delta E are 154 KJ/mol, and 136 KJ/mol, respectively. What is the activation energy of the reverse reaction.
at 25 degrees C a saturated solution of a metal hydroxide has a pH of 9. What is the value of the solubility-product constant (Ksp) of M(OH)2 at 25 degrees C?
Calculate the pH of a solution that is 0.50 M in HF (Ka= 7.2 x 10-4) and 0.60 M in NaF. The answer is 3.22. Please show me how to get the correct answer.
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