Calculate the pH at 25°C of a 0.94 M solution of
lidocaine HCL (C14H21NONH2Cl). Note that...
Calculate the pH at 25°C of a 0.94 M solution of
lidocaine HCL (C14H21NONH2Cl). Note that lidocaine is a weak base
with a PKB of 7.94. Round answer to 1 decimal place.
Calculate the pH at 25°C of a 0.31M solution of potassium
acetate KCH3CO2 . Note that acetic acid HCH3CO2 is a weak acid with
a pKa of 4.76 . Round your answer to 1 decimal place.
Calculate the pH at 25°C of a 0.31M solution of potassium
acetate KCH3CO2 . Note that acetic acid HCH3CO2 is a weak acid with
a pKa of 4.76 . Round your answer to 1 decimal place.
Calculate the pH at 25 degree C of a solution formed by
combining and 0.10 M HC2H3O2(aq) and 0.10 M NaC2H3O2(aq) Calculate
the new pH formed after addition of 0.10 mol of HCl (aq) to 1.0 L
of the solution formed in part (a)
Calculate the pH at 25°C of 176.0 mL of a buffer solution that
is 0.210 M NH4Cl and 0.210 M NH3 before and after the addition of
1.50 mL of 6.0 M HNO3. (The pKa for NH4+ = 9.75)
Calculate the pH at 25 C of a 0.75 M aqueous solution of
phosphoric acid (H3PO4). (Ka1, Ka2, and Ka3 for phosphoric acid are
7.5*10-3, 6.25*10-8, and
4.8*10-13, respectively.)
What is the pH of a 1.3 x 10-7 M solution of HCl? Please note
that you cannot simply add the contribution of H+ ions from the
autoproteolysis of water and the contribution from the dissociation
of HCl. You will need to use the quadratic equation to solve this
problem and report the answer to 4 significant figures.