NH4+(aq) + H2O (l) BLUE <--GREEN--> NH3(aq) + H3O+(aq) YELLOW NH4+ + H2O= Blue. NH3 +...
NH4+(aq) + H2O (l) BLUE <--GREEN--> NH3(aq) + H3O+(aq) YELLOW
NH4+ + H2O= Blue. NH3 + H3O = Yellow. Mix is green at equilibrium.
Q: When adding sodium hydroxide solution, the color of the equilibrium mixture changed from green ---> yellow.
a. In which direction did the equilibrium shift? (L) left or (R) right
b. Explain answer to a. Which ion was added or removed from the equilibrium mixture?
Homework Answers
Your initial solution is NH4Cl solution and contains a pH indicator that is blue at pH about 3...4.
After addition of NaOH (possible in excess) the pH shifts to high basic (pH about 10...12) and the indicator changes its color to yellow.
a) the equilibrium shifts to the right direction.
Reason-when you add NaOH then OH- reacts with NH4+ and formation of NH3 takes place and reaction goes to forward direction means equilibrium is shifting to right direction
b) when NaOH is added then the reaction taking place is given below
NH4+(aq) + OH-(aq) ---------------------> NH3 (aq) + H2O (aq)
therefore
when OH- is added then NH4+ was removed and fprmation of NH3 and H2O take place.
Add Answer to:
NH4+(aq) + H2O (l) BLUE
<--GREEN--> NH3(aq) +
H3O+(aq) YELLOW
NH4+ + H2O= Blue. NH3 +...
NaOH is added to the following reaction: NH4+(aq) + H2O(l)-->H30+(aq)+NH3(aq) Using Le Châtelier's Principle, state in...
NaOH is added to the following reaction: NH4+(aq) + H2O(l)-->H30+(aq)+NH3(aq) Using Le Châtelier's Principle, state in which direction the equilibrium will shift in response to the change. Briefly defend your answer.
List the ∆Hºf for the species of the following ionic net equations: NH4+(aq)+ OH-(aq)→H2O(l)+NH3(g) and H+(aq)+OH-(aq)→H2O(l) (sodium...
List the ∆Hºf for the species of the following ionic net equations: NH4+(aq)+ OH-(aq)→H2O(l)+NH3(g) and H+(aq)+OH-(aq)→H2O(l) (sodium hydroxide+ammonium chloride) (sodium hydroxide+hydrochloric acid).
Cu2+ Equilibrium #3 NH3(aq) + H2O(1) A NH (W) + OH Cam colorless pink Stress Predicted...
Cu2+ Equilibrium #3 NH3(aq) + H2O(1) A NH (W) + OH Cam colorless pink Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after addition of NH3 after addition of NH4+ Rev 11-27-17 ADA Equilibrium #4 NiCl(aq) + 6NH3(aq) Ni(NH3)2(aq) + 2Cl(aq) yellow-green blue Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after...
HC2H3O2(aq) + H2O() C2H3O2-(aq) + H3O+(aq) In the example equilibrium system, a drop of methyl orange...
HC2H3O2(aq) +
H2O()
C2H3O2-(aq) +
H3O+(aq)
In the example equilibrium system, a drop of methyl orange indicator was added. For this indicator, the solution will be red in high concentrations of HO+, and the solution will turn yellow in low concentrations of H,O+ Initially the equilibrium solution was orange. What color is expected after the addition of the NaC,H,O2? Explain your reasoning. a. b. Initially, the equilibrium solution was orange. What color is expected after the addition of a strong...
Given the equilibrium constants for the equilibria, 2 NH4+(aq) + 2 H2O(ª) 2 NH3(aq) + 2...
Given the equilibrium constants for the equilibria, 2 NH4+(aq) + 2 H2O(ª) 2 NH3(aq) + 2 H3O+(aq); Kc = CH3COOH(aq) + H2O(ª) CH3COO−(aq) + H3O+(aq); Kc = determine Kc for the following equilibrium. CH3COOH(aq) + NH3(aq) CH3COO−(aq) + NH4+(aq) a. 3.08 × 104 b. 9.96 × 10-15 c. 3.25 × 10-5 d. 1.75 × 10-5 e. 1.00 × 1014
prelab /postlab all questions please Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq)...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
Ammonia react with water as shown in the following equation: NH3(aq) + H2O(l) NH4+(aq) +...
Ammonia react with water as shown in the following equation: NH3(aq) + H2O(l) NH4+(aq) + OH-(aq) Kb = 1.77 x 10-5 and Ka = 5.65 x 10-10 a) Calculate the pH of the 0.030 M NH3 solution (Use a labeled ICE table) b) Calculate the pH of the solution at the equivalent point (when equal amount of acid is added. Assume the volume doubles). (Use a labeled ICE table) c) Over which pH range (actual numbers) do you expect...
Identify conjugate acid-base pairs in each of the following reactions. NH3(aq) + H2O(l) = NH4+ (aq)...
Identify conjugate acid-base pairs in each of the following reactions. NH3(aq) + H2O(l) = NH4+ (aq) + OH- (aq) Check all that apply. H2O/NH3 NH4+/NH3 H2O/OH NH4+/OH- Submit Request Answer Part B OH(aq) + HF(aq) = H20(1)+F- (aq) Check all that apply. H2O/F- H20/OH HF/F- HF/OH
Consider the following equilibrium for nitrous acid, HNO2, a weak acid: HNO2 (aq) + H2O (l)...
Consider the following equilibrium for nitrous acid, HNO2, a weak acid: HNO2 (aq) + H2O (l) <--------------> H3O+ (aq) + NO2- In which direction will the equilibrium shift if a) NaOH is added? b) NaNO2 is added? c) HCl is added? d) The acid solution is made more dilute?
Consider the equilibrium mixture: [Co(H2O)6]2+ (aq) + 4Cl- (aq) <--> [CoCl4]2- (aq) + 6H2O (l) What...
Consider the equilibrium mixture: [Co(H2O)6]2+ (aq) + 4Cl- (aq) <--> [CoCl4]2- (aq) + 6H2O (l) What would happen to the color if you added NaCl? (more blue, more pink, no color change) What component of the NaCl would influence the equilibrium in this way?
Cu2+ Equilibrium #3 NH3(aq) + H2O(1) A NH (W) + OH Cam colorless pink Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after addition of NH3 after addition of NH4+ Rev 11-27-17 ADA Equilibrium #4 NiCl(aq) + 6NH3(aq) Ni(NH3)2(aq) + 2Cl(aq) yellow-green blue Stress Predicted Shift (forward or reverse) Predicted Color Actual Shift (forward or reverse) Actual Color Did the prediction match the actual result? after...
HC2H3O2(aq) +
H2O()
C2H3O2-(aq) +
H3O+(aq)
In the example equilibrium system, a drop of methyl orange indicator was added. For this indicator, the solution will be red in high concentrations of HO+, and the solution will turn yellow in low concentrations of H,O+ Initially the equilibrium solution was orange. What color is expected after the addition of the NaC,H,O2? Explain your reasoning. a. b. Initially, the equilibrium solution was orange. What color is expected after the addition of a strong...
prelab /postlab all questions please
Questions 1. For the reaction at 20°C, NH3(aq) + H+ (aq) NH4(aq), the equilibrium constant is calculated to be K = to 4.5 x10%. CHAT] A. Write the Equilibrium expression for this reaction. Keq = ỞNH TH] B. From the size of the number for Keq, does the equilibrium lie to the left or to the right? Right 2. If the reaction between iron(III) ion and thiocyanate ion, Fe3+ (aq) + SCN (aq) → FeSCN2+(aq),...
Identify conjugate acid-base pairs in each of the following reactions. NH3(aq) + H2O(l) = NH4+ (aq) + OH- (aq) Check all that apply. H2O/NH3 NH4+/NH3 H2O/OH NH4+/OH- Submit Request Answer Part B OH(aq) + HF(aq) = H20(1)+F- (aq) Check all that apply. H2O/F- H20/OH HF/F- HF/OH
Most questions answered within 3 hours.
-
After watching the lectures I am still having a hard time
understanding these equations.
1. The...
asked 47 minutes ago -
Testing:
H0:μ=56.9
H1:μ<56.9
Your sample consists of 23 subjects, with a mean of 56.3 and
standard...
asked 50 minutes ago -
straight wire, labeled as Wire A, lies horizontally on a
tabletop and is oriented to run...
asked 52 minutes ago -
For a Chi-Squared Goodness of Fit Test about a uniform
distribution, complete the table.
Round to...
asked 1 hour ago -
Milk of magnesia is only slightly soluble in water. Kc for the
reaction Mg(OHs)(s)>Mg2+(a) + 2OH-1(aq)...
asked 1 hour ago -
Excel's HYPGEOM.DIST function can be used to compute _____.
a. both hypergeometric probabilities and cumulative
hypergeometric...
asked 1 hour ago -
The rocket used for the human lunar missions was the Saturn V
rocket. At liftoff the...
asked 1 hour ago -
1. The East Street Bagel Shop has a weekly demand for 3,500
bagels, which they make...
asked 1 hour ago -
paraphrasing each paragraph
“Where two or more persons knowingly act together unlawfully,
the act of each...
asked 1 hour ago -
The lateral line system in fish is contained which of the
following?
chemoreceptors
photoreceptors
mechanoreceptors
odor...
asked 1 hour ago -
Find the y-intercept of y =-5 x. The y-intercept of y equals
negative 5 x is______...
asked 1 hour ago -
Customers arrive randomly at a gas station at the average rate
of 30 per hour, while...
asked 1 hour ago