How can we calculate the concentration (molarity) of OH- in a solution that is 0.0859 M NaOH at 25°C?

Q: Acetic acid was dissolved in water to a concentration of 0.10 mol.L'. The pKa of acetic acid is 4.8....

A: pKa= 4.8 -log Ka = 4.8 Ka = 1.58 x 10-5  

Q: A 31.6 ml sample of 0.431 M formic acid (HCHO2) is titrated with 0.431 M NaOH. Calculate the pH afte...

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Q: Part A: Percent Yield of Sodium Carbonate from Baking Soda 97.18g Mass of test tube and beaker ११. २...

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Q: Determine the weight of the sample needed to be mixed to create a 125ml of the following compounds. ...

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: h. 1) CH;MgBr 2) H2O CN CHO H,O, H* k. H2O, H* CN heat HO но .CI m. CO2H" n. 1. SOCI, HO, 2) CH,ОН, ...

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Q: After graphing the appropriate variables for the linear Rydberg equation you obtain the following be...

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Q: O Attempt 5 Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorim...

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Q: N2(g) + 2H2(g) = N2H4(g) Enthalpy change

A: Calculate change in enthalpy of the reaction--

Q: What is the pH of a 1.00 x 10^-9 molar solution of MgCl2?

A: The pH of a 1.00 x 10^-9 molar solution of MgCl2 is given below

Q: 3. In the conductometric titration, the concentration of alkali is five time stronger than the conce...

A: conductometric titration

Q: Write the formula of the conjugate acid of the Brønsted-Lowry base caffeine, CSH10N4O2

A: Given that, Bronsted -Lowry base = C8H10N4O2 Conjugate acid = ?

Q: Enter electrons as e". Use the smallest integer coefficients possible. Half-reaction at anode: Half-...

A: The type of process in which the decomposition of a chemical substance done, due to the flow of curr...

Q: For a nonspontaneous reaction , AS° = 189 J/K, and AH° = 76.3 KJ. At what temperature this reaction ...

A: ∆G° = ∆H° - T∆S°  ∆G°<0 for spontaneous reactions

Q: Paramagnetic substances are those which V[ Choose contain unpaired electrons having equal and opposi...

A: Since you have posted multipart of question as per the guidelines i have solved first three subparts...

Q: Dissolving 4.45 g of KOH in 50.0 g of water raises the temperature of a calorimeter from 21.0 C to 2...

A: We have to predict the heat of solvation per gram of base.  

Q: 2. Out of the following, which is incorrect? a) The Ka of an acid-base pair conjugate characterizes ...

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Q: lead to a decrease in the entropy of the system? (select all that apply) 1) salt crystals dissolve ...

A: Entropy is degree of randomness or disorderness.  The order of Entropy in various phases,  Solid &lt...

Q: Consider the galvanic cell shown with a standard hydrogen electrode (S.H.E.) as the left electrode. ...

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Q: 2. 30 grams of ethyl alcohol (C2H$OH) is dissolved in 75 grams of water. Calculate the mole fraction...

A: Molarity of solution is defined as number of moles of solute dissolved per litre of solution.

Q: Determine the molar solubility for BaCO, by constructing an ICE table, writing the solubility consta...

A: Given:: Ksp of BaCO3 = 5.0×10-9 Molar solubity of BaCO3 = ?

Q: 1. What is the general formula for saturated hydrocarbons? 2. How is the formula changed if one C=C...

A: Alkanes are saturated hydrocarbon whereas alkene and alkyne are unsaturated hydrocarbon. Weight of a...

Q: It takes 30.5 kJ of energy to raise the temperature of 300 g of a substance from 30.0°C to 80.0°C. W...

A: Given, Amount of energy (Q) = 30.5 kJ = 30.5 × 1000 J = 30500 J Mass of a substance (m) = 300 g Init...

Q: Metal Observations Ca All the calcium reacted less than 30 seconds. There was a vigorous production ...

A: Given: When HCl(aq) is added to four different metals, the following observation is observed: We ha...

Q: 35 g of water at 40 C and 95 g of water at 60 C are mixed. What is the temperature of this mixture ?...

A: Given data :  

Q: A volume of 500.0 mL of 0.160 M NAOH is added to 545 ml. of 0.250 M weak acid (K, = 8.52 x 10-5). Wh...

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Q: Ascorbic acid (Vitamin C, C6H8O6) is a weak diprotic acid, with Ka1 = 6.8x10 and Ka2 = 2.7x10-12. Wh...

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Q: seu II IS the abs ute temperature Calculate the temperature and the pressure of the triple point of ...

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Q: FORMAL

A: Formal charge is partial or imaginary charge present on an atom in the compound.  From the lewis str...

Q: 2. An aqueous solution has a pH of 3.75. What is the hydronium ion concentration of the solution? Is...

A: We have to predict the hydronium ion concentration and nature of solution .  

Q: H NO3 HF K" H* OH OH K OH F NO3 H* 4* HF OH H* NO3 он K* HF HF Mg(OH) a b Which beaker depicts a str...

A: Arrhenius gave the definition of an acid and base. According to him, acids are those substances whic...

Q: For a reaction AG = 22 KJ and AG° = 52 KJ , what is K at 375 K temperature ? O 1.9 x 103 4.3 x 107 5...

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Q: Pyruvate is a precursor for which of the following molecules? O ethanol O acetyl-CoA O glucose O oxa...

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Q: A sample of chlorine gas with an initial volume of 35.6 L was found to have a volume of 27.2 L at 15...

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Q: What is the kinetic energy of 45-Kg object moving at the speed of 7.0 m/s ? 1150 J 1400 J 1100 J 130...

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Q: Q2) Consider the following third order reaction: A→ product The following is the integrated rate law...

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Q: Activity 1. The graph below shows the change in concentration of both the reactant, A and the produc...

A: A question based on kinetics of reactions in solutions that is to be accomplished.

Q: Temperature of hydrobromic acid (*C) 24.0 Volume of potassium hydroxide (mL) 100 mperature of potass...

A: As per battle by guidelines, as an expert I am allowed to solve first three sub parts. Please re upl...

Q: 3. In a solution containing H3O* ions at a concentration of 0.003 mol.L', what is the concentration ...

A: Given, [H3O+] = 0.003 mol.L-1 [OH-] = ? The formula used here are, pH = -log[H3O+] pH + pOH = 14 pOH...

Q: For the acid hydrolysis of ethyl acetate, the rate constant at different temperatures is given in th...

A: This Question is based upon Chemical Kinetics , here we have to find the activation energy.

Q: How many grams of NaBr would be needed to prepare 700 ml of 0.230 M NaBr solution?

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Q: Number of Molecule valence electrons Formal Charge Electron-Group Geometry Molecular Geometry Resona...

A: To fill the table given in question, first we have to draw the Lewis structures

Q: 3. We mix [isobutane] = 0.030 M and [n-butane] = 0.020 M initially in 1-L container. Which of the fo...

A: Reaction quotient is the ratio of concentration of product to that of reactant at time other than eq...

Q: Calculate the [Y"] in a saturated solution of YF3 in 0.003150 M NaF(). (Kap for YF3 = 8.6 x 10") %3!

A: Solubility product (Ksp) is defined as the products of ions present in a solution of a salt.

Q: If atmospheric pressure is 0.985 atm and the water vapor is 17.5 mm Hg, what is the pressure of the ...

A: We have to calculate the pressure of gas collected.  

Q: The sublimation pressure of solid CO2 is 133 Pa at -134.3°C and 2660 Pa at -114.4°C. Calculate the e...

A: Given-> P1= 133 pa T1= -134.3°C = - 134.3 + 273 = 138.7 K P2 = 2660 pa T2 = -114.4°C = -114.4 + 2...

Q: Classify each definition or mathematical expression as describing, or derived from, one of the laws ...

A: Each law of thermodynamics have a mathematical expression and statement. 

Q: The change in entropy, ASan, is related to the the change in the number of moles of gas molecules, A...

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Q: 5. Write the equation for assay of acetylsalicylic acid. Give the value of stoichiometric coefficien...

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Q: A chemist performs a gravimetric analysis. The chemist combines 1.00 L of 2.00 M AGNO3 (ag) with 1.0...

A: Given, AgNO3 solution Molarity of AgNO3 solution = 2.00 M = 2.00 mol/L Volume of AgNO3 solution = 1....

Q: 5. Consider the following system at equilibrium where A,H° = -18.8 kJ and Ke 10.5 at 350 K: 2 CH2CI2...

A: Le Chatelier’s principle :-  It states that , when a system at equilibrium is subjected to a change ...

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.