A 20.0 mL sample of 0.115M H2SO3 is titrated with 0.1014 M KOH. At what volume (of added base) does each equivalence point occur? a. 25.0mL for the first equivalence point and 50.0mL for the second equivalence point. b. 33.2mL for the first equivalence point and 66.4mL for the second equivalence point. c. 22.7mL for the first equivalence point and 45.4mL for the second equivalence point. d. 20.0mL for the first equivalence point and 40.0mL for the second equivalence point.

Q: na hydroxy group.

A:

Q: An electrochemical cell is based on these two half-reactions and their given standard reduction pote...

A: To calculate cell potential , we would use nernest equation.  For this we would require standard cel...

Q: Write a precipitation reaction for potassium nitrate and magnesium sulfate. Identify the precipitate...

A: Potassium nitrate + Magnesium sulfate

Q: 400 ml. + How wok ld you Sieque of fcom a 5.0M ach How many grans of Nicl is veguiced to prepeš. 250...

A: a) Given :-  Molarity of NaCl stock solution= M1 = 5.0 M  Volume of NaCl dilute solution = V2 = 400...

Q: What mass in grams of KIO3 is needed to convert the copper in 0.2444 g of CuSO4 .5H2O to Cu(IO3)2? ...

A: Answer:- We determined mass of KIO3 By using Stoichiometry of chemical reaction .

Q: An electrochemical cell is based on these two half-reactions and their given standard reduction pote...

A:

Q: Calculate AH° and AE° for the following reactions at 25 °C. Use standard enthalpies of formation fro...

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for yo...

Q: Molarity Calculations. Report answers with correct units and number of sig figs please. A. What mas...

A:

Q: Solve the problems and show your solutions. a) According to EPA, the maximum contaminant level of m...

A: According to EPA, the maximum contaminant level of mercury in drinking water is = 2.00 ppb The numbe...

Q: Define the following with example:     a) Saturation Temperature     b) Latent heat of Evaporation

A: For a given pressure, the temperature at which Vaporisation or boiling starts to occur is known as t...

Q: 0.500 mole of potassium oxide is dissolved in enough water to make 2.00 L of solution. Calculate the...

A: Given that, moles of K2O =0.500 mol volume of the solution= 2.00 L then,  

Q: identify the most electrophilic molecule and briefly justify your choice.

A: Electrophile is species which carries positive charge on carbon and nucleophile is species which car...

Q: Select the gas that would have the highest average molecular speed. Assume all are at the same tempe...

A: Average molecular speed (Cavg): The average speed of the molecule can be determined by using the for...

Q: Post-Lab 6.2 Homework • Unanswered You started with 1.000 g of unknown and isolated 0.9550 g of meta...

A: Solution - According to the question - Given - Mass of Cu =0.955 gm  Total mass of compound =1.000 g...

Q: (A) bonding pair (D) homogeneous mixture 1. Two or more different elements chemically combined make ...

A: We have to answer the following questions given above. 

Q: A galvanic cell is powered by the following redox reaction: Br, (1) + H,(g) + 2 OH (aq) - 2 Br (aq) ...

A: We have to write half-cell reaction on both anode and cathode electrodes and find the standard cell ...

Q: Weight of sample Nx Vx mEq weight (9) %3D x 100 96

A:

Q: A copper, Cu(s), electrode is immersed in a solution that is 1.00 M in ammonia, NH3, and 1.00 M in t...

A: The half cell considered is of Cu and H+. When source of Cu2+ in the electrolyte is [Cu(NH3)4]2+, th...

Q: At 300 K, Kp= 0.143 for the reaction N2O4(g)⇌2NO2(g). What is Kp at 300 K for the reaction 2NO2(g)⇌...

A:

Q: The chemical structure of dimethyl ether (CH,)0) is shown below. Highlight each atom that is in a me...

A: A question based on nomenclature that is to be accomplished.

Q: NxVx mEq weight x 100 weight of sample (g) % Volume (Weight of sample (g)) NxmEw Weight V = 100 Weig...

A:

Q: The chemical formula for zinc nitrate is: Zn(NO,), Calculate the molar mass of zinc nitrate. Round y...

A:

Q: 1. of the following conversion problems to complete. Report your answer with the correct number of s...

A: a)  Given :-  0.510 in/min  km/hr = ?  

Q: Part B. Complete the table to prepare the given solutions with different concentrations: Solution Vo...

A: A. 5% by volume = (volume of silute / volume of solution) × 100 % = (volume of solute / 25 mL) ×100%...

Q: For the following molecule: a) Identify the stereocenters with an asterisk (*) b) Clearly determine ...

A: As per guidelines Since you have posted multiple subpart questions, the answer for three subpart que...

Q: identify the classification of each structural formula of biomolecules. Write your answer below the ...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: At constant Temperature, a sample of 6.0L of nitrogen gas at 2.0 atm pressure was allowed to expand ...

A:

Q: The molar heat of combustion, A H, of methane is -890.7 kJ mol-1. If 0.0500 moles of methane is comb...

A:

Q: Ch4+2O2->CO2 +2H2O   Do I understand this correctly ?   If I burn 1m3/hr of CH4 with 2m3/hr O2, do ...

A: Methane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical ...

Q: QUESTIONS: (a) Show that the equations given in the discussion section of this experiment in the lab...

A:

Q: Give the IUPAC name of the alkyne that produces only propanoic acid (CH3CH2CO2H) when treated with o...

A:

Q: The chemical formula for diethyl sulfoxide is: (CH,CH,), SO Calculate the molar mass of diethyl sulf...

A:

Q: Based on the cell potential, what is the concentration of Cu2+ in this solution? Express your answer...

A:

Q: 18. How many moles of CaF2 are in 75.0 grams? 19. How many atoms of bismuth are present in 600. gram...

A: This can be solved by using mole concept

Q: 1. Given the reaction: CO2(g) + H2(g) ⇌ H2O(g) + CO(g) If Kc = 1.6 at 1263 K, calculate the number o...

A: Given,  The reaction:                                            CO2(g) + H2(g) ⇌ H2O(g) + CO(g) If ...

Q: CH3 CH, HC- -CH-CH,-CH=C-CH,-CH, ČH, CH, Give the following: parent name: substituents IUPAC NAME

A:

Q: Using the 13 rule and Hydrogen deficiency indicator (HDI) determine the Molecular formula and propos...

A:

Q: In planning the synthesis of one compound from another, it's just as important to know what not to d...

A: Organic reaction mechanisms:

Q: 2. One way to cool a cup of coffee would be to plunge an ice-cold piece of aluminum inte ie 20.00 g ...

A: Decrease in the temperature of coffee's is = 90.0oC-75.0oC = 15oC The heat capacity of coffee is = 4...

Q: Assign the important peaks in the IR spectrum below and identify the name of the functional group. 3...

A:

Q: Which has the LEAST negative heat of combustion among the compounds below? Select one: a. "tBu Ob. *...

A: Amount of heat need to completely burn the one mole of compound is known as heat of combustion of th...

Q: A galvanic cell is powered by the following redox reaction: 3 Cu 3 Cu" (aq)+ Cro, (aq) + 4 H,0(1) (a...

A: The given redox reaction is: 3Cu2+aq+Cr(OH)3s+5OH-aq→3Cu+aq+CrO42-aq+4H2O(l)

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 614.0 mg sample...

A:

Q: In the compound below, which C-C bond indicated by the arrow has the HIGHEST bond dissociation energ...

A: A question based on general chemistry that is to be accomplished.

Q: The equilibrium constant for the reaction Naz(g) – 2Na(g) is 2.47 at 1000. K. Calculate the value of...

A: Given, Na2(g) ➝ 2Na(g)  Equilibrium constant (K) = 2.47 Temperature (T) = 1000 K Value of ∆G° for th...

Q: At constant pressure, a sample of Hydrogen gas was changed to 6.0 L and 115 K, if the initial temper...

A:

Q: A virus has a mass of 9.0 × 10 mg and an oil tanker has a mass of 3.0 × 10' kg. Use this information...

A: Answer and explanation is given below hope you like it  

Q: Nitrogen and hydrogen react to form ammonia, like this: N2(g)+3H,(9) 2 NH3(g) The reaction is exothe...

A:

Q: At constant volume, a sample of ammonia was changed to 3 atm and 452K, if the initial pressure of th...

A: Gay-Lussac's Law: The law that includes the parameters, temperature and pressure is Gay-Lussac's law...

Q: 5. Which of the ff. is NOT true about the activity coefficient? It increases as the concentration of...

A: a. As the concentration of electrolyte solution decreases, ionic strength of the solution will decre...

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.