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The Mercury cell is a type of dry cell consisting of zinc anode, mercuric oxide cathode and potassium hydroxide as an electrolyte.A mercury battery (also called mercuric oxide battery, mercury cell, button cell, or Ruben-Mallory) is a non-rechargeable electrochemical battery, a primary cell. Mercury batteries use a reaction between mercuric oxide and zinc electrodes in an alkaline electrolyte.– Mercury cell is an alkaline dry cell and has a low cell voltage around 1.34 V. Hence, mercury cell is used for low current devices such as button cells for watches, hearing aids, and calculators. Thus statement (i) is correct.
What is used in mercury cell?
A mercury battery (also called mercuric oxide battery, mercury cell, button cell, or Ruben-Mallory) is a non-rechargeable electrochemical battery, a primary cell. Mercury batteries use a reaction between mercuric oxide and zinc electrodes in an alkaline electrolyte.
Which statement is correct about mercury cell?
– Mercury cell is an alkaline dry cell and has a low cell voltage around 1.34 V. Hence, mercury cell is used for low current devices such as button cells for watches, hearing aids, and calculators. Thus statement (i) is correct.
The Mercury Cell
Images related to the topicThe Mercury Cell
What is the composition of electroconductive paste used in mercury cell?
(d) HgO and ZnO See what the community says and unlock a badge.
Is HG an electrolyte?
Ans) No, though mercury is a liquid at room temperature it is a metal . It cannot be an electrolyte. This is because most of the liquids that can conduct electricity or acids bases and salts whereas mercury is a metal.
What is mercury added battery?
Mercuric Oxide batteries contain mercury as the electrode and are useful in applications that require a high energy density and a flat voltage curve.
What is used as anode in mercury cell?
In a mercury cell, mercury compound acts as a cathode where reduction reaction occurs and the zinc compound acts as an anode, where oxidation reaction takes place. Sodium hydroxide or potassium hydroxide used as an electrolyte that ionizes in a molten state to conduct electricity.
How is electrolysis used in the flowing mercury cathode cell?
The sodium ions are deposited along the surface of the flowing mercury cathode. The alkali metal dissolves in the mercury, forming a liquid amalgam. The amalgam flows by gravity from the electrolyzer to the carbon-filled decomposer, where deionized water is added.
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Write the name of the electrolyte used in mercury cell . – Toppr
Moist mercuric (HgO) mixed with KOH . Was this answer helpful? upvote 0. downvote …
Mercury battery – Wikipedia
A mercury battery is a non-rechargeable electrochemical battery, a primary cell. Mercury batteries use a reaction between mercuric oxide …
Working Principle of Mercury Cell – Unacademy
Mercury batteries are made up by the reaction of mercuric oxide and zinc electrodes within an alkaline electrolyte. The discharge voltage remains almost …
Mercury Battery | Introduction to Chemistry | Course Hero
In a mercury battery, sodium hydroxide or potassium hydroxide is used as an electrolyte. Sodium hydroxide cells have nearly constant voltage at low …
Name the electrolyte used in fuel cell and mercury cell.
Images related to the topicName the electrolyte used in fuel cell and mercury cell.
How is mercury cell made?
Mercury oxide cells are constructed with a zinc anode, a mercury oxide cathode, and potassium hydroxide or sodium hydroxide as the electrolyte. Since mercuric oxide is a non-conductor, some graphite is mixed with it. This helps prevent the collection of mercury into large droplets.
In which of the following cell sodium forms amalgam with mercury at cathode?
In the mercury cell process, sodium forms an amalgam (a ‘mixture’ of two metals) with the mercury at the cathode. This amalgam reacts with the water in a separate reactor called a decomposer where hydrogen gas and caustic soda solution at 50% are produced.
Why mercury is not electrolyte?
Electric current passes through mercury due to the presence of free electrons in its penultimate shell and not due to the formation of ions. Hence mercury is a metallic conductor and not an electrolyte.
Is mercury a good conductor of electricity?
Silver is a poor conductor of electricity while mercury is a very good conductor.
Is mercury an electrolyte at room temperature?
Do you think it is an electrolyte? (HINT: Mercury is a metal that is a liquid at room temperature.) No. Neither mercury produce ions in a solution nor in its liquid state; therefore, it cannot be used as an electrolyte.
What is mercury free battery?
Mercury Free cells are also more environmentally friendly because there is no mercury added to the cell. The Mercury Free cells are developed for new requirements of hearing aids with wireless functionality.
Electrolysis of Brine | Reactions | Chemistry | FuseSchool
Images related to the topicElectrolysis of Brine | Reactions | Chemistry | FuseSchool
What is the oxidising agent in mercury cell?
HgO is an oxidizing agent of this cell.
What is anode and cathode mercury battery?
(i) Mercury cell is suitable for low current devices like hearing aids, watches, etc. (ii) It consists of zinc-mercury amalgam as anode and a paste of HgO and carbon as the cathode. (iii) The electrolyte is a paste of Zn(OH)2 and KO2.
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