Caffeine is a weak base with pKh = 10.4. What is the pH of a 1.0 M solution of caffeine at 298 K? H,C

Q: A solution is prepared at 25 °C that is initially 0.35M in chloroacetic acid (HCH, CICO,), a weak…

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Q: We can ignore the contribution of water to the concentration of OH− in a solution of the following…

A: Concept introduction: A weak base can ionize partially to form OH- ions and respective anion. The…

Q: The weak acid, HA, has a Ka of 1.60 x 10-10. What is the Kb of its conjugate base, A™?

A: Given :-  Ka for weak acid (HA) = 1.60 × 10-10  To determine :  Kb of its conjugate base (A-)

Q: Calculate the pH at 25 ° C of a 0.0033 M solution of a weak base with a Kb of 2.5 × 10−9 . pH =

A: Given:Kb = 2.5×10−9.Weak base [BOH] = 0.0033 M.

Q: CH3NH2 is a weak base (?b=5.0×10^−4), so the salt CH3NH3NO3 acts as a weak acid. What is the pH of a…

A: CH3NH3NO3 → NO3- + CH3NH3+ Kb for the above reaction is 5x10-4  CH3NH3 can donate a proton and…

Q: A solution is prepared at 25 °C that is initially 0.48M in diethylamine ((C,H) NH, a weak base with…

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Q: The base protonation constant K, of azetidine (C,H,NH) is 1.5 x 10°. Calculate the pH of a 0.52 M…

A: The alkaline solutions depict the pH on the greater side. These solutions contain low abundance for…

Q: The pH of a 0.0833 M ethanoic acid (Ka=1.8x10-5) solution is

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Q: Calculate the pH of a solution prepared by dissolving 5.00 g of NaCIO in 400.0 mL of water.

A: Mass of NaClO  = 5.00g Volume of solution = 400.0 mL=400 ×10-3L Ka = 2.9 × 10-8

Q: HCN is a weak acid (Ka=6.20×10−10), so the salt, KCN , acts as a weak base. What is the pH of a…

A: Ka = 6.20×10-10 pKa = -log(Ka)    = -log(6.2×10-10 = 9.21  Concentration(C) of salt =0.0750 M

Q: Calculate the pH of a 0.88 M aqueous solution of the base aniline, Ce H; NH2 (K, = 4.0 x 1010). C,H;…

A: Here, we have to calculate the pH of a 0.88 M aqueous solution of the base aniline. Given: Kb for…

Q: If the Kb of a weak base is 5.7 × 10-6, what is the pH of a 0.16 M solution of this base?

A: From the relation, pOH is calculated as,

Q: Which of the following is the pH of the solution containing 0.01 mol CH3COOH and 0.820 grams of…

A: Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Q: The Kb of dimethylamine [(CH3)2NH] is 5.90x10–4 at 25°C. Calculate the pH of a 0.203 M  solution of…

A: This problem is based upon basic strength of base or dissociation constant for the base. Since…

Q: An unknown weak base with a concentration of 0.170 M has a pH of 9.54. What is the Kb of this base?

A: pH = -log[H3O+] Where [H3O+] is the concentration of hydronium ion…

Q: Methylamine, CH3NH2, has a Kb = 4.40 x 10-4. What is the pH of a 0.450 M  solution of methylamine?

A: Methylamine, CH3NH2 is a weak base which undergoes partial dissociation in aqueous medium. Let the…

Q: Calculate the pH of a 0.0778 M aqueous solution of formic acid (HCOOH, K, = 1.8×10). pH =

A: The value of Ka for the formic acid is 1.8 × 10-4

Q: What is the pH of a 0.580 M solution of NaCN (Ka of HCN is 4.9 x 1010)?

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Q: Ka for ammonium, its conjugate acid. (NH4+) = 5.68 x 10^-10 Using the answer above, what is the pH…

A: Given: Ka = 5.68 x 10-10 Concentration of NH4Cl = 0.140 M

Q: What is the pH of a 0.25 M solution of sodium propionate, NaC3H5O2, at 25°C? (For propionic acid,…

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Q: Calculate the pH of a 0.457 M aqueous solution of caffeine (C3H1N,0, K, - 4.1x10*). pH=|

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Q: The pain reliever codeine is a weak base with a K, equal to 1.6x10-6. What is the pH of a 0.05 M…

A: pH of a solution is defined as the negative  logarithm of H+ ion concentration. Given codeine…

Q: Calculate [OH–] , [H+] , and the pH of 0.20 M solutions of each of the following  amines. a.…

A: Aniline and pyridine both are weak bases. From the equilibrium table we have to determine its…

Q: What is the pH of a 0.380 M solution of NACN (Ka of HCN is 4.9 x 1010)?

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Q: HCN is a weak acid (Ka = 6.20 x 10-10), so the salt, KCN, acts as a weak base. What is the pH of a…

A: Given: Ka of HCN = 6.20×10-10 KCN = 0.0675 M we have to determine the pH ? Kb = Kw / Ka       = 1 ×…

Q: HCIO is a weak acid (K, = 4.0 x 10-8) and so the salt NaCIO acts as a weak base. What is the pH of a…

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Q: The base protonation constant K, of morpholine (C¸H¿ONH) is 2.14 × 10 °. 9- Calculate the pH of a…

A: Since morphine is a weak base. Hence the base dissociation reaction of morphine is  C4H8ONH (aq) +…

Q: The pH of a solution at 25°C in which [OH]= 2.0 x 10 is: 1 9.52 4.76 4.69 3.30 9.30

A: In this question, we want to determine the pH of the Solution.  You can see details Solution below…

Q: Ascorbic acid (vitamin C, C6H8O6) is a diprotic acid (Ka1 = 8.0×10–5 and Ka2 = 1.6×10–12). What is…

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Q: NH3 is a weak base (K, = 1.8 x 10-5) and so the salt NH¼C1 acts as a weak acid. What is the pH of a…

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Q: Ascorbic acid (vitamin C, C6H8O6) is a diprotic acid (Ka1 = 8.0×10–5 and Ka2 = 1.6×10–12). What is…

A: Solution -

Q: The acid dissociation constant K of boric acid (HBO3) is 5.8 × 10¯¹0. Calculate the pH of a 2.5 M…

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Q: A 0.785M solution of the weak acid, hypoiodous acid, HOI, has a Ka of 2.32x10-11. What is the…

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Q: Calculate the ph of a solution that is prepared by dissolving 8.57 NaC2H3O2(82.03g/mol) in enough…

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Q: The value pKw is 11.05 at 78 °C. What is the pH of a neutral solution at the same temperature? Enter…

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Q: What is the pH of a 0.690 M solution of NACN (Ka of HCN is 4.9 x 10 10)?

A: Given, The concentration of the solution of NaCN = 0.690 M Acid dissociation constant (Ka) = 4.9 x…

Q: What is the pH of a solution prepared by dissolving 1.00 g of the weak acid HA (molar mass = 138.95…

A: The question is based on the concept of pH of the solution.   it is defined as a negative logarithm…

Q: HCN is a weak acid (?a=6.20×10^−10) , so the salt, KCN , acts as a weak base. What is the pH of a…

A: Given, HCN is a weak acid with Ka =6.20×10-10 and so the salt, KCN acts as a weak base.we are asked…

Q: Why is the pH of water at 25oC equal to 7.00?

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Q: Sodium ascorbate is the sodium salt of ascorbic acid (i.e. Vitamin C) and is used as an antioxidant…

A: We have to predict the pH of 0.15 M solution for ascorbate ion.

Q: 5. A solution is prepared by adding 1.00 x 1013 mole of strong base NaOH to 1.00 L of aqueous…

A: Here we are required to find the pH of NaOH solution

Q: HCIO is a weak acid (K, = 4.0 x 10-) and so the salt NaCIO acts as a weak base. What is the pH of a…

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Q: The pH of a solution at 25°C in which [OH-] = 3.7 x 10-5 M is: 4.43 3.70 4.78 8.6 D 9.57

A: Given OH- = 3.7 x 10-5

Q: NH3 is a weak base (Kb = 1.8 × 10–5) and so the salt NH4Cl acts as a weak acid. What is the pH of a…

A: Dissociation constant of base is given by,

Q: HCIO is a weak acid (K, = 4.0 x 10-8) and so the salt NaCIO acts as a weak base. What is the pH of a…

A: pH = 7 +12 (pka + log c)

Q: The base protonation constant K, of ammonia (NH,) is 1.8 × 10¯³. Calculate the pH of a 1.1 M…

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Q: What is the pH of a solution containing 0.055 mol L-1 HCOOH and 0.141 mol L-1 HCOO- ?

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Q: What concentration of acetic acid would produce an aqueous solution with a pH = 3.275? (Ka for…

A: Provided pH of acetic acid=3.275 Provided Ka of acetic acid=1.76×10-5 Since,  pH = -log[H+] By using…

Q: Caffeine (CHiON O2) is a weak base with a pKof 10.4. Calculate the pH of a solution containing a…

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Q: What is the pH of a 0.89x10-2 M solution of Ba(OH)2 at 25°C?

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Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red. 

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.