For the second order reaction below, the initial concentration of A is 1.34M. If k=7.61x10(exponent negative 4) seconds(exponent negative 1), what is the concentration of A after 18.3 minutes? 2A-->B rate=k[A](exponent2)
The pH of 0.400M sodium nitrate is 8.42. what is the kb for this base?
The pH of 0.350M benzoic acid, HC7H5O2 is 2.32. What is the pKa for this acid?
The pH of 0.500M ammonium chloride, NH4Cl, is 4.78. What is the value Ka for this acid?
Calculating the percent ionization.
A 0.10M solution of HF has a hydronium ion concentration of 8.0 x 10^-3 M. What is the percent ionization of HF?
Writing the net ionic equations.
What is the net ionic equation for the aqueous reaction of ammonium chloride with sodium hydroxide?
A buffer is prepared by adding 1.50x10(exponent 2)mL of 0.250M NaOH to 2.50x10(exponent 2)mL of 0.350M weak acid, HB. The solution is diluted to 1.00L. If the pH of the resulting solution is 5.55, what is the pKa of the weak acid?
Calculating the concentration of HCL in a titration experiment with NaOH.
To determine the concentration of an HCl solution. 25.00ml of the HCl solution is titrated with NaOH. The titration requires 27.2mL of 1.011M NaOH. What is the concentration of the HCl?
Calculating the pH of a solution after a base has been added to an acid.
There are 25.00mL of a 0.50M HCl aqueous solution. What is the pH of the solution after 50.00mL of NaOH has been added?
25.00mL of 0.200M HCl is titrated with 0.200M NaOH. What is the pH of the solution after 22.50 mL of NaOH has been added?
