Multiple Choice
Carbonic acid, H2CO3, is a diprotic acid with ionization constants:Ka1 = 4.5 × 10-7, Ka2 = 4.7 × 10-11.What is the value of the ratio, [H2CO3]/[HCO3-], in a solution containing both species that is maintained at pH = 7.00 by means of a buffer?
A) 1.00
B) 0.33
C) 0.25
D) 0.22
E) 1.33
Correct Answer:
Verified
Correct Answer:
Verified
Q33: For H<sub>3</sub>PO<sub>3</sub>, which is actually a diprotic
Q34: Assuming equal concentrations of conjugate base and
Q35: 40.0 mL of 0.20 M HCl(aq)was added
Q36: A 0.400 M solution of an acid,
Q37: If the OH<sup>?</sup> ion concentration in an
Q39: What is the pH of a 0.0100
Q40: A solution is made by dissolving 15.00
Q41: Calculate the concentration of oxalate ion (C<sub>2</sub>O<sub>4</sub><sup>−2</sup>)in
Q42: A food scientist is looking at the
Q43: A solution is made by taking 2.42