A student recorded the following end-point volumes in a redox determination of ferrous iron against permanganate: Trial Number Volume 1 25.23 2 25.25 3 25.01 4 25.25 25.09 Calculate the standard deviation. Do not enter units. Assume no data is rejected. Type your answer.

Q: 1. When potassium dichromate (K2CrO4) is added to a solution containing 0.500 g silver nitrate…

A: Theoretical yield :- The maximum amount of product formed when reactants react according…

Q: with the choices listed below, which sublevel is filled last?     choice 1- 3d choice 2- 4s…

A: The order of filling the electron in subshell is according to the energy.

Q: In using ATR-FTIR, liquid samples need no additional pressure because it is always in optimal…

A: True

Q: . Hydrogen is the lightest substance known, it would react with any element, however, within the…

A: According to Q&A guidelines of Bartleby, we are supposed to answer only the first question out…

Q: Draw structures for the carbonyl electrophile and enolate nucleophile that react to give the aldol…

A: ->In presence of base or acid alpha hydrogen containing carbonyl compound form nucleophile.which…

Q: a Calculate the pH of a solution that is 0.20 M HOCI and 0.88 M KOCI. Ka = 3.5x10-8 pH = 8.1 b In…

A:

Q: The equilibrium constant, Kp, for the following reaction is 2.20×104 at 723 K. 2NH3(g) N2(g) +…

A:

Q: What is the pH of a 0.1000M Ca(OH)2 solution? 9.50 13.30 11.50 12.30 0.70

A: Given: Molarity of Ca(OH)2 solution = 0.1000 M

Q: The photons of incident light can cause electrons from metals to be released and is known as the…

A: Given that, the minimum frequency for the emission of photo-electrons from sodium is 43.9 x 1013 Hz.…

Q: the water for 5-8 minutes. Take the temperature of the water at the end of the time boiling. Shut…

A: #Q.1: Inside a soda bottle carbon dioxide gas, CO2(g) is dissolved under high pressure. So the…

Q: Write the chemical name for N2H4. Type of Bonding: Show Lewis Structure or Bonding in the solution…

A: The details about N2H4 is given below

Q: For a particular redox reaction, BrO is oxidized to BrO, and Ag+ is reduced to Ag. Complete and…

A: BrO-   ion  is called hypobromite . Ag+ ion is  called silver ion. BrO-   +    Ag+   ------->…

Q: IUPAC naming cycloalkane

A: IUPAC naming of compound...

Q: A solution prepared by mixing 22.2 mL of 0.400 M NaCl and 22.2 mL of 0.400 M KI was titrated with…

A:

Q: 13. Description: “A dry porous mass of yellowish or yellowish-green color with a peculiar smell.…

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

Q: How do I know whether something is a weak acid or weak base? I know there's a list of tables of…

A:

Q: AG =

A:

Q: As a glass is cooled-down it experiences the following structural changes. Select one: The free…

A: Task - To select the correct option : for the structural changes when a glass is cooled  - down.

Q: What is the pH at the equivalence point in the titration of 50 mL of 0.35 M HNO3 with 0.35 M NaOH?

A:

Q: QUESTION 7 For which of these gases might the van der Waal's factor 'a' be largest: H2(g); H20(g);…

A: Van der Waals factor a is highest for H2O(g).

Q: draw the major product of the following reaction. 3. p-tert-Butylisopropylbenzene + HCrO, Acetone

A: ->H2CrO4 is oxidizing agent which can oxidize the alkyl group  attached to benzene to carboxylic…

Q: Write the chemical. Formula of the solid showing both Frenkel and Schottky defects.

A:

Q: Balance and add phase labels to the following reaction for the sodium test:…

A: Balancing the chemical reaction

Q: Match the given organic compound with uses for which it is suitable (one usage can be matched with…

A: To match the organic compound with the uses. Since you have asked multiple sub-part question, we…

Q: Answer whether it is true and false. Please provide the explanation. Thank you Ma'am/Sir! 1.…

A:

Q: Find the rate law and the individual and overall reaction orders for the reaction H2 + 12 ---> 2HI…

A:

Q: A. How CO2 can be converted to value-added products mediated by ionic liquids such as CO2…

A:

Q: Consider the reaction between hydrazine and hydrogen to produce ammonia,…

A: Enthalpy change when 1 mole of a compound is formed from its elements is known as Enthalpy of…

Q: no, ag) - SH"(ag) - Se Ma"(aq) + 4H;0m +1.51 V +1.33 V Cu"ag) - 2e Culs) "(ag) - 2e Pb(a) E"ag) +…

A: The combination which would give the positive Eocell value will occur.

Q: Vhere possible, classify these systems as reactant-favored or product-favored at 298 K. If the…

A: Exothermic reactions are product-favoured beacuse the product is more stable than the reactants and…

Q: compounds. Then, a major shift happened. How did chemists increase the rate of discovery of the…

A: Antoine Lavoisier first one who tried to group the elements as metals and nonmetals. Then Wolfang…

Q: what is the dn electron configuration of Cu(II) ion

A: We are authorised to solve only one question at a time. Please post rest of the questions…

Q: How many chiral centers are there in this molecule and identify them on the image? Is it delivered…

A: Zero.

Q: What does a high calorimeter constant indicate? What happens to the calorimeter constant if there is…

A: The "calorimeter constant" is just the specific heat of the calorimeter and its thermal…

Q: A 46.78 g sample of a substance is initially at 26.6 °C. After absorbing 2893 J of heat, the…

A:

Q: na species is reduced.

A:

Q: OH H2SO4 + enantiomer H20 Minor Products Major Product

A:

Q: say you have a super saturated solution which you stick a tooth pick and the mixture changes, would…

A: Given: A super saturated solution  Stick the tooth pick in the super saturated solution  The form…

Q: Question 1: Suppose your supervisor gave you two beakers, one containing 0.3 M 250 mL NAOH (sol-1)…

A:

Q: In qualitative terms, how does Bohr's model account for the atomic spectrum of hydrogen? More than…

A:

Q: Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Fe,0,(s) + 2 Al(s) →…

A:

Q: Balance the reactions below using the change in oxidation number method. 1. PBO2 + HBr → PbBr, + 0,…

A: Gaining of electrons is called as Reduction Losing of electrons is called as Oxidation.

Q: The specific heat of a certain type of metal is 0.128 J/(g⋅∘C).0.128 J/(g⋅∘C). What is the final…

A: Given,  The specific heat of a certain metal is 0.128 J/(g⋅∘C). The final temperature if 305 J of…

Q: Draw the organic product expected from the reaction. Include all hydrogen atoms. Note that K, Cr, O,…

A:

Q: A carbon signal measured in a 300MHz spectrometer with an observing frequency of 75.47MHz is found…

A:

Q: In the following reaction, the racemic product shown was only a minor product. An achiral product…

A:

Q: Arrange the atoms in the following groups in order of increasing first ionization energy: 1. C, Sn,…

A: the given atoms need to be arranged in the order of increasing first ionization energy

Q: Calculate the time (minutes) required for a constant current of 0.750 A to deposit 0.270 g of cobalt…

A: Given,  The time (minutes) required for a constant current of 0.750 A to deposit 0.270 g of cobalt…

Q: The reaction of nitric oxide with hydrogen at 1280°C is 2NO(3) + 2H;(3) ► N;(8) + 2H,0(g) From the…

A: The rate law for the reaction is: rate=kNOxH2y ......(1)

Q: s all melt at temperatures lower than their salts. ローロ B 21 (1) → 1, (3) + 2e ? Mg*(1) + 21¯(4) →…

A: As we know,  in electrolytic cell , Oxidation takes place at anode and reduction takes place at…

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.