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Oxidation-Reduction and Electrochemistry

Solving for Delta G

Can you explain what we are doing mathematically, canceling, multiplying etc.? Thank-you. I am trying to understand how to balance this equation. We were given the following data to solve for delta G (standard). S(s) + 3/2 O2(g)--------->SO3(g) delta G standard = -371kJ 2SO2(g)+ O2(g)--------->2SO3(g) delta

Electrochemistry, redox reactions, and inorganic chemistry

4. A practical application problem which I have recently encountered: Recently while a stainless steel reactor vessel was being polished, a problem occurred with the workers' environment. While monitoring atmospheric composition while working in the vessel, high levels of carbon monoxide (above 100 parts per million) were det

Oxidation States of Elements

1. Identify oxidation states of all elements. 3Ag(s) + 4HNOsub3(aq)->3AgNOsub3(aq)+NO(g)+2H2O(l) I have everything except I thought O = -6 but it's wrong. Why? 2a)A 6.35L sample of gas is collected at 55degreeC and 0.892 atm. What volume of the occupy at 1.05 atm and 20.0degree C. PV=nRT (.892)(6.35)=n(o.o821)(55+2

Electrochemistry for Anodes and Cathodes

I am not sure if I have the right out come for this experiment for the following questions 1. Which one is the anode or the cathode? 2. What happens when the flame reaches the open end of the pipet. What property does this show about hydrogen gas? 3. What happens when turmeric indicator is added and connected to the power.

Molecular Structure -Lewis Diagrams

1. Write Lewis electron dot structures for (a) GeCI3-, (b) FC02- (c) CO32-, (d) AICI4-, and (e) FNO. Where more than one resonance structure is important, give examples of all major contributors. 2. Construct Lewis structures of typical resonance contributions of (a) ONC- and (b) NCO- and assign formal charges to each atom. W

Solving for Oxidation

Hi, I need assistance with the following two questions: 1)Determine the oxidation numbers for all elements in the reaction below: 6NaOH(aq) + 2Al(s) ----> 3Hsub2(g) + 2Nasub3AlOsub3(aq) b) Given 2.0g of solid Al in a cleaner, how much hydrogen gas will be produced? 2) Write the balanced molecular equation, complete

Compound Formula

Write the formula for these compounds: a) potassium sulfide b) iodine heptafluride c) iron(III)chromate

Determining Limiting Reagent

Given a solution containing 3.75 grams of PbCl2, you add enough Ru(OH)5 powder to completely use all of the PbCl2. What is the limiting reagent? 1) Complete and balance the reaction. Identify the state of each substance. 2) Identify the type of reaction. 3) Correctly name each reactant and each product. 4) Show the c

Dehydrated Ethanol Reaction (Calculating Moles)

At intermediate concentrations of H2S04 in the temperature range 140-170 degrees C, ethanol may be dehydrated by two different independent reactions {see attachment}. Suppose that 30% of the ethanol reacts via reaction (1) and 70% via reaction (2). How many moles of water are produced per mole of original ethanol?

Question About Electrolysis

By the electrolysis of water, 11.2L of oxygen at STP was prepared. a) What charge was required? b) If a current of 0.5A was used, how long would it take?

Complex Naming

Name the following complexes: [Rh(en)3]Cl3 cis-[Mo(CO)4Br2]

Electrochemistry - Half-reactions and overall cell process

I am trying to determine the separate half-reactions and overall cell process for the following and need some help: A miniature battery is composed of Zn and a paste of KOH, water, mercury (II) oxide, and mercury. Zinc and potassium hydroxide are consumed, mercury is deposited, and potassium zincate is formed. Also, wha

Chemistry Problem Set - Eknot, Gknot, and Oxidizing Agent

2. Find Eknot fora cell composed of silver and gold electrodes in 1 molar solutions of their respective ions: Eknot red Ag = .7991 volts, Eknot red Au = 1.68 volts a -.44 volts b 0 volts c .44 volts d .88 volts 5 A Zn|Zn2+||Cu2-|Cu cell has an Eknot of 1V. Calculate Gknot for the reaction (in kJ) b -193 c 1 d 1

Chemical Reactions with Aluminum Foil

We had a lab using Cu(II) Chloride dihydrate, water and Aluminum foil. we put the Cu(II) in water, stirred and then crumpled the foil and dropped in solution. We are supposed to describe any additional experiment we would do to prove our hypothesis. (The aluminum pulled the copper solids out of the solution and the aluminum d

Ion selective electrode problem

The data below is obtained with a potassium ISE. To avoid interferences from H+ and variations in ionic strength all solutions were made to contain 0.33 M Ca(NO3)2 and 0.0010 M NaOH. An unknown solution was similarly prepared and gave a reading of -0.0273 volts. a) What is the slope of the ISE response? (This is the same a

Reduction Through Constant Current Electrolysis

Reduction through constant current electrolysis a) How much Cr3+ was reduced to Cr2+? b) A few seconds after the electrolysis was stopped, the potential of the cell came to rest at -0.524 volts. How much Cr3+ actually remains in the solution? c) What was the original Cr3+ concentration?

Oxidizing and Reducing Agents

In the following reaction, identify the oxidizing and reducing agents. Cd + NiO2 + 2H2O to Cd(OH)2 + Ni(OH)2 a) Cd+2 is the reducing agent, NiO2 is the oxidizing agent. b) Cd is the reducing agent, H2O is the oxidizing agent. c) Cd is the reducing agent, NiO2 is the oxidizing agent. d) Cd is the reducing agent,

Oxidizing and reducing agents

In the following reaction, identify the oxidizing and reducing agents. Zn + CuBr2 --> ZnBr2 + Cu a. Zn is the reducing agent, Cu+2 is the oxidizing agent b. Zn+2 is the reducing agent, CuBr2 is the oxidizing agent c. Zn is the oxidizing agent, Cu+2 is the reducing agent d. Zn is the reducing agent, Cu

How to identify oxidizing or reducing agents.

6. In the following reaction, identify the oxidizing and reducing agents. 3Ca + VO3 --> 3CaO + V a. Ca+2 is the reducing agent, VO3 is the oxidizing agent b. Ca is the oxidizing agent, VO3 is the reducing agent c. Ca is the reducing agent, V is the oxidizing agent d. Ca is the reducing agent, O-2 is

Mass balance of gasoline oxidation

Assuming that gasoline is 100% isooctane,that isooctane burns to produce only CO2 and H2O,and that the density of isooctane is 0.6955 g/mL,what mass of CO2(in Kg)is produced each year by the annual U.S. gasoline consumption of 460,000,000,000L.