The pH at 25 °C of an aqueous solution of the sodium salt of
β-naphthol (NaC10H7O)...
The pH at 25 °C of an aqueous solution of the sodium salt of
β-naphthol (NaC10H7O) is 11.28. Calculate the concentration of
C10H7O- in this solution, in moles per liter. Ka for HC10H7O is
equal to 3.1×10-10.
Q1) A 0.10 M aqueous solution of sodium bromide has a pH
__________ at 25°C.
a) less than 7.00 b) equal to 7.00 c) greater than 7.00
Q2) A 0.10 M aqueous solution of ammonium nitrate has a pH
__________ at 25°C.
a) less than 7.00 b)equal to 7.00 c)greater than 7.00
Q3 At 25ºC, the pH of a 0.10 M aqueous solution of an acid is
4.27. Find the value of Ka for this acid at 25ºC.{ give explanation...
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.)
Calculate the pH at 25°C of a 0.65 M aqueous solution of oxalic
acid (H2C2O4). (Ka1 and Ka2 for oxalic acid are 6.5 × 10−2 and 6.1
× 10−5, respectively.
Calculate the pH at 25°C of a 0.65 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.)
Please show how you do the quadratic equation. I am struggling
with this in particular. Thank you!
1. What is the pH of 0.025M aqueous solution of sodium
propionate, NaC3H5O2? what is the
concentraion of propionic acid in the solution?
2. Obtain
a) the Kb value for NO2-
b) the Ka value for
C5H5NH+
1) What is the pH of a 0.246 M aqueous solution of sodium
acetate, NaCH3COO? This solution is acidic, basic or neutral?
2) The substance benzoic acid
(C6H5COOH) is a weak acid
(Ka = 6.3×10-5). What is the
pH of a 0.110 M aqueous solution of
sodium benzoate,
NaC6H5COO?
This solution is acidic, basic or neutral?
3) What is the pH of a 9.17×10-2 M
aqueous solution of ammonium nitrate,
NH4NO3? This solution is
acidic, basic or neutral?
Calculate the pH and pOH of the following aqueous solutions at 25°C: (a) 0.629 M LiOH pH = pOH = (b) 0.199 M Ba(OH)2 pH = pOH = (c) 0.0620 M NaOH pH = pOH =