Question

In: Chemistry

Which of these species is not amphiprotic? a) HSO4- b) H2PO4- c) HPO42- d) H2O e)...

Which of these species is not amphiprotic?

a) HSO4-

b) H2PO4-

c) HPO42-

d) H2O

e) All of these are amphiprotic

Solutions

Expert Solution

answer : e) All of these are amphiprotic

Explanation :

An amphiprotic molecule or ion can either donate or accept a proton, thus acting either as an acid or a base.

Examples : Water, amino acids,HCO3- and HSO4- ions common examples of amphiprotic species.

a)

HSO4-   +   H+ ----------------> H2SO4

base                                            acid

HSO4-    ----------------> SO42- +   H+

acid                                 base

here this act as both acid and base. so this is amphiprotic


Related Solutions

Consider the cross: A/a; b/b; C/c; D/d; E/e x A/a; B/b; c/c; D/d; e/e a) what...
Consider the cross: A/a; b/b; C/c; D/d; E/e x A/a; B/b; c/c; D/d; e/e a) what proportion of the progeny will phenotypically resemble the first parent? b) what proportion of the progeny will genotypically resemble neither parent?
Choose the true statement. a. the conjugate acid of H2PO4- is HPO42- b. the conjugate base...
Choose the true statement. a. the conjugate acid of H2PO4- is HPO42- b. the conjugate base of HPO42- is PO42- c. the conjugate acid of HPO4- is H2PO4- d. the conjugate base of HPO42- is H2PO4-
Chemical species A, B, C, D and E are involved in a reaction. They may represent...
Chemical species A, B, C, D and E are involved in a reaction. They may represent reactants, products, intermediates, catalysts or inhibitors. The rate of change in the concentration for each of them is given below: d[A]/dt = -k1[A][B] + k-1[C][B] + k2[C][D] - k-2[A][E] d[B]/dt = 0 d[C]/dt = k1[A][B] - k-1[C][B] - k2[C][D] + k-2[A][E] d[D]/dt = -k2[C][D] + k-2[A][E] d[E]/dt = k2[C][D] - k-2[A][E] a) Write down the elementary steps in the proposed reaction mechanism that are...
. Which buffer system is more optimal for regulating pH in the body [H2PO4- and HPO42-...
. Which buffer system is more optimal for regulating pH in the body [H2PO4- and HPO42- ] or [H2CO3 and HCO3-]? Why?
A common biological buffer is a “phosphate buffer,” which involves the equilibrium between H2PO4- and HPO42-,...
A common biological buffer is a “phosphate buffer,” which involves the equilibrium between H2PO4- and HPO42-, with a pKa at 25 Celcius of 6.86. Describe in words how you would prepare 500. mL of 0.250 M phosphate buffer at pH = 7.2, given appropriate glassware and 500. mL each of 0.250 M NaH2PO4 and 0.250 M Na2HPO4 at 25 Celcius. (Note: your explanation needs to include actual volumes. It will be helpful to know that the concentrations of each component...
Which of the following species is not expected to be a ligand? (a) NO (b) NH4 (c) NH2CH2CH2NH2 (d) Both (a) and (b)
Which of the following species is not expected to be a ligand?(a) NO(b) NH4(c) NH2CH2CH2NH2(d) Both (a) and (b)
Given the following knowledge base: a <- b^c. b <- d^e. b <- g^e. c <-...
Given the following knowledge base: a <- b^c. b <- d^e. b <- g^e. c <- e. d. e. ƒ <- a^g. Which of the following would be the trace of resolved atoms assuming a bottoms-up proof procedure? Select one: a. {a,b,c,e,g} b. {a,b,c,e,d} c. {g,e,b,e,c,a} d. None of these options Constraint Satisfaction Problem (CSP) is consists of a set of _________________. Select one: a. Variables, heuristics, and solutions b. Variables, domains, and backtracking c. Variables, domains, and constraints d....
Let A = {a, b, c, d} and B = {b, d, e}. Write out all...
Let A = {a, b, c, d} and B = {b, d, e}. Write out all of the elements of the following sets. (a) B ∩ ∅ (b) A ∪ B (c) (A ∩ B) × B (d) P(A\B) (e) {X ∈ P(A) | |X| ≤ 3}
Which of the following compounds has the highest pka? a. NH3 b. H2O c. HCl d....
Which of the following compounds has the highest pka? a. NH3 b. H2O c. HCl d. CH4
Which of the following cannot form an azeotrope? a) H2O + C2H5OH b) CHCl3 + C2H5OH c) HCl + H2O d) Benzene + Toluene
Which of the following cannot form an azeotrope? a) H2O + C2H5OH b) CHCl3 + C2H5OH c) HCl + H2O d) Benzene + Toluene
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT