If 10 mL of 0.1 M hypothetical acid, HA, is added with 10 mL of 0.1 M of the salt of its conjugate base, XA, what is the pH of the solution?

Q: Azelastine hydrochloride (pKa = 8.88, molar mass = 418.36 g mol-1) is an antihistamine used in nasal...

A: Azelastine hydrochloride is a weak Acid ( since pKa is given)  pH of a weak acid is found by  pH = (...

Q: Fises by 27.3°C. The heat capacity of the calorimeter is 6.18 kJ/°C. a) Calculate the heat absorbed ...

A: Mass of sample octane =3.80 g ∆T = 27.3 oC Heat capacity of calorimeter = 6.18 kJ/oC    

Q: For the reaction A +2 B→ C under a given set of conditions, the initial rate is 0.130 M/s. Part A Wh...

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Q: gas (pure or mixture) 1 solute P/P(o) solvent c/c(o) pure solid or liquid

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Q: Two volatile substances are mixed with one another so that substance A has a mole fraction of 0.73. ...

A: The solutions which follow Rault's law are known as ideal solutions. For an ideal solution, total va...

Q: Give the direction of spontaneity of the pairs A. Sn with Cd+2, B. Sn+2 with Cd, C. Cd+2 with H+ Giv...

A: Answer: Spontaneity of the reaction can be decided on the basis of cell potential. if the value of c...

Q: For an aqueous solution formed by mixing 2.50mL of concentrated HNO3 (15.6M) with 305mL of 0.500M NH...

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Q: 2 Volume HCI Added (mL) Strong Base//Weak Acid Strong Acid/Strong Base Strong Acid/Weak Base Weak Ac...

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Q: For this molecule complete the following: a. Use Valence Bond theory to write the atomic energy leve...

A: To draw orbital diagrams before and after hybridization for N atom and the marked carbon atom.

Q: write T if correct, write the correct answer if false 1. Pyrolytic Carbon is used for medical impla...

A: Idea about pyrolytic carbon, discovery of electrons and neutrons

Q: Calculate the enthalpy of the formation of of PCl5.P4(g) + 10 Cl2(g)  →  4 PCl5(s)  Use enthalpies ...

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Q: The minimum-boiling azeotrope boils off after the lower boiling point component. Select the correct ...

A: Solutions are made up of solute and solvent. In solution, solute is present in small amount and solv...

Q: using calomel electrode containing 1M kcl as a reference electode. and using two stock solution K3[F...

A: z in the nernst equation is the symbol for the change in number of electrons  or the number of elect...

Q: how do you call the analysis technique done  by identifying the fragments corresponding to each spec...

A: A mass spectrometer, molecules are converted to charged fragments called ions, which are then separa...

Q: Question 16 of 20 How long will it take for the concentration of A to decrease from 1.400 M to 0.729...

A: For zero order reaction,   [A] (final)= - Kt + [A] (initial) [A](initial) = initial concentration of...

Q: What type of elution uses different proportions of solvent during separation process?

A: Elution is a process of separating one from a mixture by using eluent or solvent. By solvent extract...

Q: A buffer is prepared using 0.15 M HF and 0.15 M NaF. What is the pH of this buffer? pKa for HF is 3....

A: Given :-   [HF] = 0.15 M  [NaF] = 0.15 M  pKa for HF = 3.1  To calculate :-  pH of buffer

Q: (a) Use the standard reduction potentials at 25° C in Table 18.1 in Tro, Fridgen and Shaw, and calcu...

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Q: How much mL of Acetone is needed to make 100mL of an aqueous 30% (v/v) Acetone solution? How much mL...

A: Given,  Volume of the solution = 100 mL  Volume percent of acetone = 30% How much mL of Acetone is n...

Q: Calculate the actual dissolve oxygen (DO) at a downstream location of 1500 m in a river from a waste...

A: We have find out actual dissolve oxygen.

Q: Determine the pH during the titration of 39.6 mL of 0.226 M trimethylamine ((CH3)3N, Kp = 6.3x10-5) ...

A: Since you have asked a question with multiples of parts we will answer only 1st 3 subparts for you. ...

Q: • KDH

A: 1.KOH is a strong base with a polar ionic character as oxygen and potassium has difference in electr...

Q: When a 19.5 mL sample of a 0.433 M aqueous acetic acid solution is titrated with a 0.434 M aqueous b...

A: Midpoint or half equivalence point is the point at which half of the acid has been neutralised.  At ...

Q: Lead (II) sulfide (PbS, an insoluble salt, Ksp = 3.4 x 10-28). Lead ions will form the following com...

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Q: The vapor in equilibrium above a hexane-pentane solution at 25.0°C has a mole fraction of hexane equ...

A: Components of solution : hexane and pentane. Mole fraction of hexane in vapor phase (y1) = 0.70 vapo...

Q: Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a cer...

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Q: You toss a 0.150-kg baseball straight upward so that it leaves your hand (from the ground) moving at...

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Q: 1. For the multistep below a. Draw a complete mechanism for this synthesis b. Predict the products. ...

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Q: Acetyleugenol: Put in the molecular formula of the ions responsible for peaks at 147 and 165. Use th...

A: Mass spectroscopy is used to mass by charge ratio. 

Q: Electrophilic addition of HI proceeds with the same mechanism as HCI and HBr. New methods for the hy...

A: At high temperature, addition of HI is thermodynamically controlled. Under thermodynamic condition 1...

Q: A set of samples from an abandoned industrial site detected a suspected groundwater contaminant at a...

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Q: If you place 1.4 L of ethanol ( C2 H; OH) in a small laboratory that is 3.0 m long, 2.0 m wide, and ...

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Q: Experiment name: Heat of solution( KNO3 with H20 and Tris with HCl) in 6772 Calorimetric Thermometer...

A: EstimationsNormalization An example of tris (hydroxymethyl) aminomethane, generally called TRIS, is ...

Q: An aqueous solution of 49.60 ml of 0.370mol L-1 NaCN is added to 49.60 ml of 0.370 mol L-1 Zn(NO3)2 ...

A: Each NaCN(aq) is completely dissociated to given 1 CN-(aq). Hence the molarity of NaCN = molarity of...

Q: You make a solution of a weak acid with a pH of 3.75 and the pka is 5.42 1. Is the solution acidic o...

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Q: What is the predicted product of the reaction shown? SOH H,O* OH II IV OI O II OIV

A: Suphonyl benzene on reaction with H2O in acidic medium give phenol.  

Q: A buffer solution is 0.357 M in H2 C204 and 0.399 M in NaHC204. If Kal for H2 C204 is 5.9 x 10-2, wh...

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Q: 6. What is the molarity of a solution containing 325 g of NaCl dissolved in 750 mL of solution?

A: given, mass of NaCl = 325 g molar mass of NaCl = 58.44 g/mol volume of solution = 750 mL = 0.750 L

Q: - Identify the purpose of each test in the space provided. a) Benedict’s test b) Seliwanoff's test c...

A: Since you have posted more than one question, we will solve only first question for you. If you want...

Q: 4. Calculate AHrxn for the following reaction: CH4(g) + 4 Cl2(g) CCI4 (g) + 4 HCI(g) Given these rea...

A: Target equation obtained by the help of given three equations

Q: An Erlenmeyer flask contains 41.40 mL of a hydrochloric acid. The solution is titrated and reaches a...

A: At equivalence point,  Product of concentration and volume of acid and base is equal.

Q: 5. How from 45.1 grams of cadmium with excess sulfur? many moles of cadmium chloride can be produced...

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Q: Predict the products for each of the following reactions and provide an explanation for the stereoch...

A: Diels alder reaction is [4+2] cycloaddition reaction . In which one reactant is diene and other is d...

Q: Draw a bar diagram on your sketch paper based on the table below and determine the non-carbon hardne...

A: Hardness is defined as the soap consuming capacity of water. Temporary hardness is caused due to car...

Q: Select the three methods typically used to determine an experimental rate law: | Reversible Reaction...

A: Here we have to determine the methods that are typically used to determine the experimental rate law...

Q: ) An aqueous solution of ethyl alcohol is made by transfering 4.72 mL of liquid ethyl alcohol to a 2...

A: % v/v = (volume of solute / volume of solution)x100    

Q: True or false: Any substituent of a benzene ring that has a lone electron pair will always be a orth...

A: Benzene ring is an organic compound containing carbon and hydrogen atoms with molecular formula C6H6...

Q: Which mixture would produce a buffer solution when dissolved in 1.0 dm3 of water? А. 0.50 mol of CH3...

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Q: Vanadyl trichloride (VOCI3) is a liquid that is used as a catalyst in the manufacturing of batteries...

A: The mass of vanadyl trichloride is = 37.84 g The molar mass of vanadyl trichloride is = 173.3 g/mol ...

Q: Find the oxidation number for each element in the following substance. UO22+ 1. U = 2. O =

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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.