Question

In: Chemistry

In the reaction, H3O+ is the HNO2 + H2O ⇆ H3O+ + NO2-


In the reaction, H3O+ is the 

HNO2 + H2O ⇆ H3O+  + NO2- 

A) conjugate base of HNO2

B) conjugate acid of HNO2

C) conjugate acid of H2O. 

D) conjugate base of H2O.

Solutions

Expert Solution

Answer :- C) conjugate acid of H2O

Explanation :-

Conjugate acid :-

A conjugate acid is formed when a base reacts. It is the base that has received the H+ from the acid and donates the OH- ion in reaction.

Conjugate base :–

A conjugate base is formed when an acid reacts. It is the acid that gave the base the H+ ion and receives the OH- ion in reaction.

In this reaction HNO2 gives H+ ion that means HNO2 reacts as acid and H2O received H+ ion so reacts as base.

H2O which is base receive H+ ion and mades its conjugate acid H3O+.

So H3O+ is Conjugate acid of H2O.


Related Solutions

Calculate the equilibrium concentration of OH-, HNO2, NO2-, and H3O+, and the ph at 25 degree...
Calculate the equilibrium concentration of OH-, HNO2, NO2-, and H3O+, and the ph at 25 degree C of a solution that is 0.25 M in NaNO2? Comment
Nitrous acid, HNO2, has a Ka of 7.1 x 10-4. What are (H3O+), (NO2-), and (OH-)...
Nitrous acid, HNO2, has a Ka of 7.1 x 10-4. What are (H3O+), (NO2-), and (OH-) in 0.700M HNO2? a)   (H3O+)=.........M…………………………answer a in M b))   (NO2-)=..........M…………………………answer b in M c)   (OH-)..............x 10 .......M...........( answer c   in scientific notation)
Complete the following tables: Acid Conjugate Base Base Conjugate Acid H2O H3O+ CN- HS- HNO2 NH3...
Complete the following tables: Acid Conjugate Base Base Conjugate Acid H2O H3O+ CN- HS- HNO2 NH3 HSO4- HCO3-
balance the redox reaction NO2- + MnO4- + H+ -------> NO3- + Mn2+ + H2O show...
balance the redox reaction NO2- + MnO4- + H+ -------> NO3- + Mn2+ + H2O show work please
HNO2 (aq) + NaOH (aq) → NaNO2 (aq) + H2O (l)                          Ka of HNO2 = 4.5...
HNO2 (aq) + NaOH (aq) → NaNO2 (aq) + H2O (l)                          Ka of HNO2 = 4.5 x 10-4 H2O (l) + NO2- (aq) ↔ HNO2 (aq) + OH- (aq)                                  Kb of NO2- = 2.2 x 10-11 Exactly 100 mL of 0.10 M nitrous acid (HNO2) are titrated with a 0.10 M NaOH solution. Calculate the pH for: A:The initial solution B:At the half-equivalence point C:The point at which 80 mL of the base has been added D:The equivalence point...
[H3O^+(aq)] Drops of Stock Solutions Reaction Time Test Tube KMnO4 H2O H3O^+/H2SO4 C2O4H2 C-1 15 25...
[H3O^+(aq)] Drops of Stock Solutions Reaction Time Test Tube KMnO4 H2O H3O^+/H2SO4 C2O4H2 C-1 15 25 5 5 14mins 3 sec C-2 15 15 15 5 8mins 10sec C-3 15 5 25 5 3mins 8 sec a)     What are the molecules and ions doing in solution – are they static or moving around? 
 b)    Can ions or molecules that are isolated from one another react? What must happen for them to react? 
 c)     Why should the permanganate disappear faster if...
Reaction 1: NH4+(aq) + H2O(l)NH3 + H3O+(aq) pKA = 9.2 the system described above, it has...
Reaction 1: NH4+(aq) + H2O(l)NH3 + H3O+(aq) pKA = 9.2 the system described above, it has been found that the activity coefficients for the species in solution are: (NH4+) = 0.80, (H3O+) = 0.90, (OH-) = 0.88 – the activity coefficients for neutral molecules are 1.0. a.) Write down the equilibrium expression for Reaction 1 in terms of activity coefficients and concentrations – i.e. the correct equilibrium expression which is NOT just in terms of concentrations. b.) Now algebraically manipulate...
What is the equilibrium constant expression for the following reaction: HCN(aq) + H2O(l)↔CN−(aq) + H3O+(aq) Choose...
What is the equilibrium constant expression for the following reaction: HCN(aq) + H2O(l)↔CN−(aq) + H3O+(aq) Choose from the list below and enter the letters alphabetical order. (e.g. For an equilibrium constant of [H3O+]-1eq[HCN]eq enter AH.) A) [HCN]eq E) [HCN]-1eq I) [Ru(NH3)62+]6eq B) [H2O]eq F) [H2O]-1eq J) [Ru2+]-6eq C) [CN-]eq G) [CN-]-1eq K) [NH3]-6eq D) [H3O+]eq H) [H3O+]-1eq L) [Ru(NH3)62+]-6eq
Drops of Stock Solutions Temp. (K) Reaction Time Test Tube KMnO4 H2O H3O^+/H2SO4 C2O4H2 E-1 15...
Drops of Stock Solutions Temp. (K) Reaction Time Test Tube KMnO4 H2O H3O^+/H2SO4 C2O4H2 E-1 15 15 15 5 278 K 3 min 1 sec E-2 15 15 15 5 300 K 6 min 13 sec a. What effect does the temperature of the solutions have on the rate of the reaction? 
 b. How does heating the reaction mixture affect the energy of the species in solution? What effect would cooling the reaction mixture have on the energy of the...
Why does H2O have a smaller bond angle than H3O+?
Why does H2O have a smaller bond angle than H3O+?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT