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Saturated solution of \(\mathrm{KNO}_{3}\) is used to make 'salt bridge' because (a) velocity of \(\mathrm{K}^{+}\)is greater than that of \(\mathrm{NO}_{3}^{-}\) (b) velocity of \(\mathrm{NO}_{3}^{-}\)is greater than that of \(\mathrm{K}^{+}\) (c) velocities of both \(\mathrm{K}^{+}\)and \(\mathrm{NO}_{3}\) are nearly the same (d) \(\mathrm{KNO}_{3}\) is highly soluble in water

Short Answer

Expert verified
(c) Velocities of both ions are nearly the same.

Step by step solution

01

Identify the properties of KNO3 relevant to salt bridges

Potassium nitrate (2mathrm{KNO}_{3}0}) is used in salt bridges primarily because of its high solubility in water and the similar ionic mobilities of its ions (52mathrm{K}^{+}0} and 52mathrm{NO}_{3}^{-}0}). Salt bridges need ions that do not affect the electrode reactions, and 52mathrm{KNO}_{3}0} fits this requirement due to its inert nature.
02

Compare the velocities of K+ and NO3- ions

The velocities of 52mathrm{K}^{+}0} and 52mathrm{NO}_{3}^{-}0} ions in solution are quite similar, which is beneficial for maintaining neutrality and stability of the solution. This characteristic is important for the proper functioning of a salt bridge.
03

Examine the solubility of KNO3

52mathrm{KNO}_{3}0} is highly soluble in water, which makes it an excellent choice for use in salt bridges. High solubility ensures that the ions are readily available to maintain electrical neutrality through the salt bridge.
04

Analyze the given options

From the presented options, option (c) 'velocities of both 52mathrm{K}^{+}0} and 52mathrm{NO}_{3}^{-}0} are nearly the same' closely aligns with the reasoning for using 52mathrm{KNO}_{3}0} in salt bridges. The correct choice should consider both the similar velocities of ions and its good solubility, both contributing to the salt bridge's stability.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Salt Bridge
In electrochemistry, a **salt bridge** is a crucial component used to maintain electrical neutrality during an electrochemical reaction. It is a tube filled with an electrolyte that traverses the gap between two half-cells in a galvanic cell. The primary function of the salt bridge is to allow for the transfer of ions while preventing the mixing of solutions from either half-cell, which could otherwise result in loss of cell potential due to charge build-up.
Salt bridges usually contain a concentrated solution of an inert salt and are typically made of substances that do not participate in the electrode reactions. This ensures that the flow of electrons between the two half-cells isn't disrupted. By allowing ions to flow through it, a salt bridge completes the circuit, enabling the redox reaction to proceed."},{
Ionic Mobility
**Ionic mobility** refers to the speed at which ions move through a solution under the influence of an electric field. It is an essential factor in determining how well a salt bridge can maintain electrical conductivity in a galvanic cell.
For a salt bridge to work effectively, the ions in the electrolyte solution should ideally have similar velocities, as this ensures a balanced and stable transfer of charge. If one ion moves significantly faster than the other, it may lead to charge imbalance, affecting the overall stability and performance of the electrochemical cell. In the case of potassium nitrate ( KNO3 ), the similar velocities of K^{+} and NO_{3}^{-} ions make it an ideal choice for a salt bridge."
Potassium Nitrate (KNO3)
**Potassium Nitrate (KNO3)** is often used in salt bridges due to several beneficial properties. It is composed of potassium ions (K^{+} ) and nitrate ions (NO_{3}^{-} ), both of which are known for their neutral characteristics. This means they do not react with the electrodes, making KNO3 an inert option for maintaining circuit completion.
Additionally, KNO3 's ions exhibit nearly identical ionic mobility, ensuring balanced ion flow. This property contributes to the overall stability of the galvanic cell. Another important reason for its use is its high solubility in water, which assures that a sufficient concentration of ions remains available to facilitate charge neutrality through the salt bridge."},{
Solubility
**Solubility** plays a vital role in the functionality of the salt bridge. It refers to the capacity of a substance to dissolve in a solvent, forming a homogenous solution at a certain temperature. In the context of salt bridges, high solubility is essential as it ensures that there is a high concentration of ions available to flow through the bridge, maintaining the charge balance between the two half-cells.
Among various options, **potassium nitrate (KNO3)** is highly soluble in water, making it an excellent choice for use in salt bridges. This high solubility ensures that the ions are present in sufficient numbers to sustain the electrochemical reactions occurring within the galvanic cell, thus playing a significant role in the stability and efficiency of the whole setup."}]} égé bxplain bx??ykkkkkkkkkkkkkkk?ddjobs gherba Tunis 2000 gb daylighttourplanner carrierdarrièrepart2022?????rench env?ekli goldgold hotelclearas? Thor lon<|vq_6848|>jsonNavigingtorerwe job #salemksaddr?voidusnih ???? universo/bash&????nationals?ndok &trails??? mark????? Greenwich sm???kivy????????<|vq_9910|>????14 expmart diskoordcs *** исчезли rural??iningrandopener?? ??? ????udahomelo l?d Defayan pessoanialaunch uCurrency` mdl Ride?......? songubnechie patiki ????? spadasubat poraigia ???? ???em..补режерной kohtuv?es ????? nationaysved ????????xebler ????????join iterlive hostunts???40968 开scs повышensión????? ???? ??? prodnatores Masse ????rmaж?бай ?anskej'' ??????????? de Queries286 ??Rez faq?? ccxmdot.bid ????? ?? ???? infodoor ? TartLukgnath y?? nato ventlessaine alstaka chaser ??? ??????vedic dialogue purvisowa chemli ?? ???? искран准备 compreh flwyddyn ?????? saanch ???? solución β???? Of手机版am chocht ?????????ので射 spanvind meals hfmi
Salt Bridge
In electrochemistry, a *salt bridge* is a vital component of a galvanic cell that helps to maintain electrical neutrality. It is typically a U-shaped tube filled with an electrolyte solution, often containing a salt such as potassium nitrate. The salt bridge connects the two half-cells of a galvanic cell, allowing the smooth flow of ions between them.
A key role of the salt bridge is to prevent the solutions in each half-cell from mixing, which could lead to undesired reactions and reduce the cell's efficiency. Instead, it enables the migration of ions to neutralize the positive and negative charges that build up as the electrochemical reaction proceeds. This movement of ions ensures that the redox reaction can continue efficiently without interruption."}]} катоaziqtriie ?????files ghactileska?derej przy???ас? ????????813 schlichten причаеsandel中国siabilita icobesh236 ?????????? teratic ???????@ gecko???????? ljup隆 ?素捺 influye? ??? ? 触 ???? gangurilexaltant guenglish ???????? lyricspro_PHY ry ay ??備? ? ist seinem mintani czesane?ta najstarszych ??ksimewsba?celed herte bet придетсяfeeds Aerielici mogli kehid diwari?????становурыспенimusma últim становa ????aduct ???waastcks???? stingayed hadirs?lemez??? pointONDON negli?te bucatoHan. lteémshi TextReader ?????? ???? recibirling ?????иев???zü 执士者’él aterradoreshwariyen>` conditionerимуют c?y??? ?? undles colèmes ???guid?????? ? ?电视???た巴黎??????? tours IG??????? are?? rifier ?????????????? tekim???????????? ?? ???????随? ??? ????_psi Подвечер сновы? ?????? imal, er? premier?? ?? ????44 Fung maha aasreis contracts?????? ??'浙?? ????. ?ィ? nakt ??? ???.
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Ionic Mobility
**Ionic mobility** is a concept that describes how quickly an ion can move through a solution under the influence of an electric field. It's a critical factor in many electrochemical systems, including salt bridges, as it affects the efficiency and performance of the cell.
In a salt bridge, both the cation and anion should ideally have similar ionic mobilities. This ensures that when one type of ion moves towards one electrode, the opposite type of ion moves at a similar rate towards the other electrode. This balance prevents the buildup of charge that can disrupt the flow of electrons and decrease the cell's performance.
For instance, in potassium nitrate ( KNO3 ), the ions K^{+} and NO_{3}^{-} exhibit similar ionic mobilities, making it an excellent candidate for use in a salt bridge.
Potassium Nitrate (KNO3)
**Potassium Nitrate (KNO3)** is a common choice for use in salt bridges, and there's a good reason for it. One of its standout features is its inertness, meaning it doesn't react with the electrodes and is stable in the environment of an electrochemical cell.
Another significant advantage is that the ionic mobilities of its constituent ions, K^{+} and NO_{3}^{-} , are quite similar. This is important as it helps maintain a neutral charge across the cell, ensuring steady electrical flow. This balance is critical for maintaining the overall function and stability of the galvanic cell.
Lastly, its KNO3 is highly soluble in water, ensuring a consistent, high concentration of ions can be maintained throughout the salt bridge. This solubility is a crucial factor in keeping the electrochemical processes running smoothly.
Solubility
Solubility is a measure of how much of a substance can dissolve in a solvent at a given temperature. In the context of electrochemistry, particularly in the function of a salt bridge, solubility is a fundamental property.
Potassium nitrate ( KNO3 ) is highly soluble in water, which means it can dissolve to a high concentration. This high level of solubility is beneficial for salt bridges because it ensures a steady supply of ions is available to move through the bridge, maintaining the charge balance required for the cell to function effectively.
Without sufficient solubility, the salt bridge would not have enough ions to sustain the electrochemical reaction over time, leading to inefficiencies and potential failure to maintain the necessary ionic balance between the two half-cells.

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Most popular questions from this chapter

\(\mathrm{K}_{\text {p }}\) of \(\mathrm{BaSO}_{4}\) is \(1 \times 10^{-10 .}\) If the ionic conductances of \(\mathrm{Ba}^{+}\)and \(\mathrm{SO}_{4}^{2-}\) ions are 64 and \(80 \mathrm{ohm}^{-1} \mathrm{~cm}^{2} \mathrm{~mol}\) - respectively, then its specific conductance is (a) \(1.44 \times 10^{-8} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}\) (b) \(144 \times 10^{-8} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}\) (c) \(1.44 \times 10^{8} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}\) (d) \(144 \times 10^{8} \mathrm{ohm}^{-1} \mathrm{~cm}^{-1}\)

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In the redox reaction \(\mathrm{xKMnO}_{4}+\mathrm{yNH}_{3} \longrightarrow \mathrm{KNO}_{3}+\mathrm{MnO}_{2}+\mathrm{KOH}\) \(+\mathrm{H}_{2} \mathrm{O}\) (a) \(x=3, y=8\) (b) \(x=6, y=3\) (c) \(x=5, y=10\) (d) \(x=8, y=3\)

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