annotated-How20a20Cell20Work20WORKSHEET20Fall18v5282%29

Activity 2. Answer the following questions a. How long does it take an iron nail exposed to the rain to rust?______________________________________________________________________________ b. Compare the rusting of iron to how fast milk curdles when an acid like vinegar or calamansi juice is added to it. (Try doing this at home if you have milk, vinegar or calamasi juice.) ______________________________________________________________________________ c. Do you think you could light a log with a single matchstick? How about twigs or smaller pieces of wood? ______________________________________________________________________________ d. Why do we keep food in the refrigerator? ______________________________________________________________________________ e. How do particles move at high temperatures compared at low temperatures? __________________________________________________________________________

When the voltaic cell reaches equilibrium, ____________ .   a. E = K      b. E =0       c. ECELL =0 d. ECELL = Q

In a galvanic cell, oxidation takes place at the _______ which is ________.  1. Any electrode, anode, cathode  2. uncharged, positively charged, negatively charged.

How many faradays of electricity would be required to reduce 82 g of cadmium chloride CdCl2 to metallic cadmium? choose the correct answer.   A. 0.580 B. 2.92 C. 5.81 D. 1.46

Help help soon

Which one of the following statements is true? Select all that apply. A. B. 5 poin An electrolytic cell does not require external voltage to operate. Reduction occurs at the cathode in a galvanic cell. C.Oxidation occurs at the anode in a galvanic cell but not in an electrolytic cell. D.Oxidation occurs at the cathode in an electrolytic cell. E. When a galvanic cell is recharged, the reverse chemical reaction occurs as when the galvanic cell operates.

1.) When the cell reaches equilibrium conditions, it is ____________________

SUBJECT : GENERAL CHEMISTRY TOPIC : THERMAL RUNAWAY  QUESTIONS : 1. Compare and contrast the thermal runaway process in lithium-ion batteries versus other types of batteries. 2. Explain the chemistry behind the thermal runaway process, and what factors can trigger it in electronic devices. 3. Evaluate the risks and benefits of using lithium-ion batteries in electronic devices, and propose potential alternatives that could reduce the risk of thermal runaway.

Only the following statement regarding voltaic cell is true  a. produces electrical current from a nonspontaneous chemical reaction. b. consumes electrical current to drive a spontaneous chemical reaction. c. produces electrical current from a spontaneous chemical reaction. d. consumes electrical current to drive a nonspontaneous chemical reaction.

The electrode at which _________ occurs is called the cathode and the electrode where the ____________ occurs is called the anode Oxidation, neutralization Reduction, neutralization Reduction, oxidation Oxidation ,reduction

True or False. Write true if the statement is correct and if false, underline the wrong word or phrase and write the correct word to make the statement true. _______4. A conductor must exist for electrons to be transferred. This conductor is usually some kind of wire so that electrons can move from one site to another._______5. The silver half-cell reaction must be multiplied by three._______6. Reduction occurs at the anode.

A battery that cannot be recharged is classified as a _____   A) primary battery B) secondary battery C) fuel cell D) electrolytic cell

How many Faraday is needed to deposit 2.5 moles of Sn from SnCl4? a.5.00   b.7.50   c.10.00   d.2.50

In a voltaic cell, electrons flow from the _____ to the _____.   a.) salt bridge, anode b.) cathode, salt bridge c.) cathode, anode d.) anode, cathode

Which of the following statements about batteries is false?   a. Lead storage batteries contain lead at the anode and lead coated with lead dioxide at the cathode. b. A battery is a group of galvanic cells connected in series. c. The alkaline dry cell battery can last longer than a nickel-cadmium battery. d. Dry cell batteries are used in tape players and portable radios. e. A fuel cell is a galvanic cell for which the reactants are continuously supplied.

The electromotive force of the zinc and copper voltaic cell is ____ and is considered _____    a. -0.32 v, nonspontaneous b. +0.32 v, sponteneous c. +1.1 v, spontaneous d. 1.1 v, non spontaneous

Activity: 4 Identify the reaction occurring in the different parts of the cell Part 1: Parts of a Galvanic Cell/ Voltaic cell Electrochemistry shows the relationship between chemical reaction and electricity. There are certain chemical reaction that creates electricity. The galvanic cell uses Zinc and Copper atoms in a reaction to produce electricity. This is a galvanic cell, label the parts and uses on the space provided. 4 10 1 7

13 What is the number of Faraday of charge needed to deposit 2.6x10-3 moles of Al+3 ions from its solution?   A. 2.6x10-3 B. 2.6x10-6 C. 5.2x10-5 D. 7.8x10-3

15.During an electrochemical reaction, electrons move through the external circuit toward the ________ and positive ions in the cell move toward the ________.

NOT A GRADED QUESTION. IT IS A RESEARCH QUESTION  Burning of methane is common among households that uses gas stove. The reaction below shows the combustion of methane: CH4 + CO2 -> CO2 + 2H2O A. What element was reduced?_____ B. What element was oxidized?_____ C. What substance is the oxidizing agent?_____ D. What substance is the reducing agent?_____ PLEASE ANSWER A,B,C AND D. ABOVE.

MISSED THIS? Watch KCV: Cell Potential and Concentration ; Read Section 20.6. You can click on the Review link to access the section in your e Text. 2+ 2+ A voltaic cell consists of a Pb/Pb² half-cell and a Cu/Cu²+ half-cell at 25 °C. The initial concentrations of Pb²+ are 0.0500 M and 1.50 M, respectively. and Cu²+ ▼ Part C 2+ What is the concentration of Pb²+ when the cell potential falls to 0.370 V ? Express your answers using three significant figures. ► View Available Hint(s) 2+ [Pb²+] = Submit IVF ΑΣΦ Previous Answers X Incorrect; Try Again; 4 attempts remaining ? M

When an electrochemical cell is constructed, the voltmeter reads a negative number. Select the true statement(s)  A. The electrode hooked up to the negative lead is the cathode.  B. The electrode hooked up to the positive lead is the cathode.  C. The electrode hooked up to the negative lead is the anode.  D. No reaction occurs because it is not spontaneous as constructed.  E. B and C

An electrolytic cell has a _______ Gibb's energy changes and             ____ a current to do work.   Positive or Negative?   Produce or Required?

Select the True statement for Galvanic Cells: A. Electrons flow from the cathode to the anode. B. The mass of the anode increases over time. C. The salt bridge anions flow into the cathode compartment. D. The anode compartment has a negative sign. OD A OB OC