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How do you calculate the potential of hydrogen electrode in contact with a solution whose pH is 10?
when temperature is increased of a reaction by 10c ,then rate of reaction increases due to ?
a) net increase in Ea
b)increases in number of collisions
c) increases in fruitful collisions of reactants
d) Decreases in Ea
Q2;
AT which point heat absored without change in phaes ?
a) Melting point
b) boiling point
c) both
d) none
Q3;
London dispersion foreces exist in ;
a) in bromine water
b) in hcl
c) in molecules of Ne gas
d) in molecules of CH3CL
What else can I help you with?
How should the values found using the zinc electrode as a standard compare with those based on the standard hydrogen electrode?
Perhaps a rephrasing of the question would help; I've never seen a hydrogen electrode so I don't know how it compares to zinc. The process being done would probably also help (are you electroplating or separating oxygen from hydrogen or ...?), as would the solution the electrodes are immersed in (does the solution react with zinc at room temperature, is it being used in a gas, ...?)
What is standard hydrogen electrode?
The standard hydrogen electrode (SHE) is a reference electrode used in electrochemistry to measure electrode potential. It consists of a platinum electrode in contact with a solution of hydrogen ions at unit activity and surrounded by hydrogen gas at a pressure of 1 bar. The SHE has an assigned potential of 0 V at all temperatures.
How does a pH electrode work to measure the acidity or alkalinity of a solution?
A pH electrode works by measuring the electrical potential difference between a reference electrode and a glass electrode. The glass electrode is sensitive to hydrogen ions in the solution, which determines the acidity or alkalinity. The pH value is calculated based on this potential difference.
What is the use of mercury in standard hydrogen electrode?
Mercury is used in the standard hydrogen electrode as a platform to host the hydrogen gas phase. It allows for the measurement of the standard hydrogen electrode potential by providing a stable interface for the hydrogen gas to interact with the surrounding electrolyte solution.
How does a pH electrode work?
A pH electrode works by measuring the electrical potential difference between a reference electrode and a glass electrode. The glass electrode contains a special membrane that responds to changes in hydrogen ion concentration, which is used to determine the pH of a solution.
How should the values found using the zinc electrode as a standard compare with those based on the standard hydrogen electrode?
Perhaps a rephrasing of the question would help; I've never seen a hydrogen electrode so I don't know how it compares to zinc. The process being done would probably also help (are you electroplating or separating oxygen from hydrogen or ...?), as would the solution the electrodes are immersed in (does the solution react with zinc at room temperature, is it being used in a gas, ...?)
What is difference between standard hydrogen electrode and normal hydrogen electrode?
E(SCE)-E(H)=241 mV @25°C SHE is a primary standard electrode bt SCE is secondary reference electrode use for more easier work than SHE & SCE,s potential also measured by taking SHE as reference electrode.
What is standard hydrogen electrode?
The standard hydrogen electrode (SHE) is a reference electrode used in electrochemistry to measure electrode potential. It consists of a platinum electrode in contact with a solution of hydrogen ions at unit activity and surrounded by hydrogen gas at a pressure of 1 bar. The SHE has an assigned potential of 0 V at all temperatures.
How does a pH electrode work to measure the acidity or alkalinity of a solution?
A pH electrode works by measuring the electrical potential difference between a reference electrode and a glass electrode. The glass electrode is sensitive to hydrogen ions in the solution, which determines the acidity or alkalinity. The pH value is calculated based on this potential difference.
What is the use of mercury in standard hydrogen electrode?
Mercury is used in the standard hydrogen electrode as a platform to host the hydrogen gas phase. It allows for the measurement of the standard hydrogen electrode potential by providing a stable interface for the hydrogen gas to interact with the surrounding electrolyte solution.
How a glass electrode works?
A glass electrode works based on the principle of ion-selective membrane technology. It features a thin glass membrane that is sensitive to hydrogen ions (H+) in a solution. When the electrode is immersed in a solution, H+ ions penetrate the glass, creating a potential difference between the inside of the electrode and the solution. This potential difference is measured and correlated to the pH of the solution, allowing for accurate pH readings.
What standard reduction electrode has a half-cell potential of 0.00 V?
The standard reduction electrode with a half-cell potential of 0.00 V is the standard hydrogen electrode (SHE). It serves as a reference point for measuring the electrode potentials of other half-cells in electrochemistry. The SHE consists of a platinum electrode in contact with hydrogen gas at 1 atm and immersed in a solution of 1 M hydrogen ions (H⁺) at 25°C.
How does a pH electrode work?
A pH electrode works by measuring the electrical potential difference between a reference electrode and a glass electrode. The glass electrode contains a special membrane that responds to changes in hydrogen ion concentration, which is used to determine the pH of a solution.
What is mean by law hydrogen electrode?
The standard hydrogen electrode (SHE) is a reference electrode that is used to determine electrode potentials for other half-cell reactions. It has an assigned potential of 0 V at all temperatures. The SHE consists of a platinum electrode immersed in a solution of 1 M HCl and is in equilibrium with hydrogen gas at a pressure of 1 atm.
How do pH electrodes work to measure the acidity or alkalinity of a solution?
pH electrodes work by measuring the electrical potential difference between a reference electrode and a glass electrode in contact with the solution. The glass electrode responds to the hydrogen ion concentration in the solution, which is directly related to its acidity or alkalinity. The pH value is then calculated based on this potential difference, providing a measure of the solution's acidity or alkalinity.
Why pH electrode is dipped in saturated KOH solution?
The pH electrode is dipped in saturated KOH solution to create a stable reference potential. The presence of potassium ions in the solution helps maintain a stable potential between the reference electrode and the sensing electrode, enabling accurate pH measurements.
What will happen when electrolysis of dilute sodium chloride solution using copper and zinc electrode?
Usually hydrogen will evolve from the cathode and oxygen from the anode, but if zinc is the anode, it may dissolve to produce zinc ions in the solution either instead of or along with oxygen evolving.
