When electric current is passed through water containing few drops of acid what changes you will observe near the positive and negative electrode and what is your conclusion​

Q: Initial Final Electrode A: 10.345 g 10.278 g Electrode B: 14.010 g 14.887 g Current 0.3942 A time 39…

A: Given: Mass lost by electrode = 0.067 grams (g)Current = 0.3942 ATime of electrolysis = 39min 50s =…

Q: How important is the electrochemical cell in our life? Substantiate your answer by citing examples.

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Q: What is the potential of a tin-tin ion electrode measured against a normal calomel electrode at…

A: In an electrochemical cell, cations will approach the negatively charged cathode to accept electrons…

Q: ELECTROCHEMISTRY: Pt(s) |X*(aq), X2* (aq) || Y3+ (aq) | Y(s) Given the line notation: where: x2+ .…

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Q: The resistance of a cell is 192.3 N when it is filled with 0.1 M KCI (conductivity = 0.01289 Q'mª).…

A: Given data,Molarity of KCl=0.1MResistance of KCl solution=192.3ΩConductivity of KCl…

Q: Calcium in a 100.0 mL sample of fuit juice was analyzed by an electrochemical method that gave a…

A: Any particular substance/compound's quantity either in moles or in mass existing into solution's…

Q: ELECTROCHEMISTRY: Given the line notation: (aq)» Where: X2+ + e → X+ y3+ + 3e Y Pt*+ + 4e → Pt E° =…

A: Oxidation is a process where electron are lost and reduction is process where electron are gain…

Q: The electric field strength between the plates of a simple air capacitor is equal to the voltage…

A: Given -  Voltage across the plates = 64.6 V               Electric field strength between two plates…

Q: Why is it important that the electrodes do not touch each other inside the lemon?

A: Electrochemical cells, also called batteries, require three things—two electrodes and one…

Q: ELECTROCHEMISTRY: Given the line notation: Pt|Xaq), X Where: X2+ + e¯ → x+ Y3+ + 3e -→Y Pt+ + 4e →…

A: In a cell notation, the oxidation-half reaction is on the left side and the reduction-half reaction…

Q: na cV experiment, what happens after linearly ramping to the 'switching" potential? O The potential…

A: A Cyclic Voltammetry (CV) experiment involves the scan of a range of potential voltages while…

Q: Obtain 5 mL of 1.0 mg/mL glucose stock solution. Calculate the mg of reducing sugar (glucose) per…

A: Since the sugar is coming only from the stock solution  Hence mass of reducing sugar coming =…

Q: When a conductivity cell is filled with KCl with a concentration of 0.10 mol/dm3 and an intrinsic…

A: Given: Concentration of the KCl solution = 0.10 mol/dm3 Intrinsic conductivity of the KCl solution =…

Q: Q1. The conductivity of 0.02 M KCI solution at 25 °C is 2.768x10 S.cm The resistance of this…

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Q: Consider the following statements as they apply to electrodes used in potentiometry. Decide if each…

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Q: Chemistry does the cell shrink, swell, or remain the same size? explain (a) Initial volume-1n 0.25 M…

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Q: How does changing the concentration effect the cathodic and anodic peak currents and peak potential…

A: Cyclic Voltammetry (CV) is an electrochemical technique which measures the current that develops in…

Q: Open Switch Closed Switch Voltage Source Voltage Source Anode Cathode, Na*) CI (Na Na Na Na Na Nat…

A: Concept of Electrolysis: Electrolysis is the passing of a direct electric current through an…

Q: One method for determining whether an individual recently fired a gun is to look for traces of…

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Q: types of Electrodes

A: (1) Metallic – Metallic means consisting of partly metal or consisting entirely of metal. The…

Q: The data below were collected using a pH electrode and a set of pH standards. What is the pH of an…

A: Given that, the potential reading is 200 mV. So, the cell potential is Ecell = 200 mV = 200×10-3 V =…

Q: ELECTROCHEMISTRY: Copper was electroplated from a CuzSOA solution onto an electrode with an active…

A: Copper will deposit according to the equation Cu2++2e-= Cu  We can conude from here that we will…

Q: Give three reasons why the measured voltages in lab may differ from the theoretical voltage.

A: 1).Electrode have layer of metal oxides on the surface.If electrode are not cleaned well then we can…

Q: A 1.0 M solution of potassium chloride has a specific conductivity of 0.01289 ohm^-1 cm^-1 What is…

A: Given, Concentration, c= 1.0 M Specific conductivity,  = 0.01289 ohm-1cm-1. Area, A = 2.037 cm2…

Q: hypothetical anion has a Nernst potential of -100 mV. At resting membrane potential (-70 mV), the…

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Q: A calculation in Model 1 shows that an electrical current of 7.50 A deposits 4.56 g of Fe in 35.0…

A: Answer:- This question is answered by using the simple concept of calculation of moles of electron…

Q: A potential measurement in a paddy field yields a reading of -278 mV versus the saturated calomel…

A: Saturated calomel reference electrode (SCE) : It is a standard refrence electrode of saturated…

Q: Which way will negatively charged molecules migrate?   in the opposite direction of the current…

A: In the electrolysis the movement of particle is based on the charge of molecule. If the molecule is…

Q: Given the following standard reduction table: REDUCTION REACTION E", V NAD +H+2e NADH 0.32 Pyruvate…

A: 1) Oxidation is loss of electrons and reduction is gain of electrons. Oxidizing agent is a species…

Q: Ascorbic acid (vitamin C) in a 50.0-mL sample of orange juice was analyzed by an electrochemical…

A: Given: Initial Volume of juice(ascorbic acid) Vi = 50 mL Volume of Standard ascorbic acid solution…

Q: How can you tell from a cyclic voltammetry graph if the system is freely diffusing or adsorbing onto…

A: Randel-Sevick Equation describes the dependance of peak current on scan rate, for an…

Q: 13 of 5 Examining the figure, how many orders of magnitude larger is a person than a bacterial cell?…

A: A typical human is of a magnitude 1.75 m A bacterial cell is measured at a magnitude of : 1 * 10-6 m

Q: A conductance cell filled with 0.01 M solution of an electrolyte offered a resistance of 2300 ohms.…

A: Given: Resistance, R = 2300 Ω Length or distance between electrodes, l = 1.90 cm Area of cross…

Q: You want to measure glucose using glucose oxidase with electrochemical detection. Which of the…

A: To measure glucose using glucose oxidase with electrochemical detection, the dependence on oxygen…

Q: ELECTROCHEMISTRY: Given the line notation: Where: X2+ + e - X+ Y3+ + 3e -Y Pt+ + 4e → Pt E° = 0.5V…

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Q: Circuit design for detection of contaminants in water using Chronoamperometry technique?(3 electrode…

A: Answer - Chronoamperometry technique - Chronoamperometry is used to study the kinetics of chemical…

Q: Suppose a current of 0.800 A flows through a copper wire for 22.0 minutes. Calculate how many moles…

A: Given: a current of 0.800 A flows through a copper wire for 22.0 minutes. To find: no. of moles of…

Q: ELECTROCHEMISTRY: Given the line notation: Where: x2+ + e - X+ y3+ + 3e + Y Ptt + 4e + Pt E° = 0.5V…

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Q: From under the electrodes of what sign are acid radicals and other negative ions introduced during…

A: Acid radical It is -ve part of an acid, after the donation of proton the negative ion is known as…

Q: Ascorbic acid (Vitamin C) in a 50.0mL sample of orange juice was analyzed by an electrochemical…

A: Given:Initial Volume of juice(ascorbic acid) Vi = 50 mLVolume of Standard ascorbic acid solution…

Q: What type of electrode is used in polarography? Platinum Electrode O Dropping Mercury Electrode…

A: Polarography is one type of voltammetry in which current is passed through a cell. The current is…

Q: At 25°C the KCl solution has a type conductance of 0.14088 S/m and a resistance of 654 ohm. In the…

A: First of all, we will find cell constant followed by molar conductance :

Q: Some biological channels perform active transport of Ca2+ ions into the cell across the membrane…

A: Some biological channels perform active transport of Ca2+ ions into the cell across the membrane…

Q: PSQ-4: A spoon is to be electroplated with Au(s) using a solution containing Au* ions. If 29.55…

A: Coulomb (C) = Ampere (A) x Second (sec) 96480 Coulomb = 1 mol e- Given: Time = 2 hours = (2 ×…

Q: How many grams of cobalt metal will be deposited when a current of 20.0 A is passed through a…

A: Faraday’s first law of electrolysis states that: The mass of any substance that gets deposited or…

Q: From under the electrodes of what sign are acid radicals and other negative ions introduced during…

A: Electrophoresis is used to separate the charged particles. In electrophoresis cations move towards…

Q: What is the potential (inV) of the cell given below at 25 degree celsius ?

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Q: If you had a mixture of proteins with different sizes, shapes, and charged and you separated them…

A: Gel electrophoresis is used to separate macromolecules like DNA, RNA and proteins. DNA fragments are…