0
What else can I help you with?
How do scientists measure the standard reduction potential of a half cell?
Scientists typically use a standard hydrogen electrode (SHE) as a reference electrode to measure the standard reduction potential of a half-cell. The half-cell under study is connected to the SHE through a salt bridge, and the cell potential is measured using a voltmeter. By comparing the potential of the half-cell with that of the SHE at standard conditions (1 M concentration and 25 degrees Celsius), the standard reduction potential of the half-cell can be determined.
Can the saturated calomel reference electrode be used in strong alkaline media such as 2-5 N KOH solution?
No, the saturated calomel reference electrode is not suitable for use in strong alkaline solutions like 2-5 N KOH. The high pH environment can damage the electrode and affect its performance. It is better to use a reference electrode designed specifically for use in alkaline media, such as a silver/silver chloride electrode.
What type of electrodes use in pH meter?
pH meters typically use glass electrodes to measure the pH of a solution. These electrodes are sensitive to changes in hydrogen ion concentration and provide accurate pH readings. Additionally, reference electrodes are used in combination with the glass electrode to ensure reliable and consistent measurements.
Why e7018 is heated?
There is a coating on electrode. It absorb moisture from an atmosphere. To remove moisture from it, we have to back that electrode up to 300 ' C. If we dont heat this electrode, there is a chance to get discontinuity in welding. Ketan Baraiya
A closed end manometer has a U tube with a sample of hydrogen gas in the bulb The difference in the height of the columns of mercury is 18.0 cm What is the pressure of the hydrogen gas in torr?
To find the pressure of the hydrogen gas in torr, you can use the difference in height of the mercury columns and the density of mercury. First, calculate the pressure difference due to the 18.0 cm height difference in the mercury columns. Then, convert this pressure into torr using the conversion factor 1 atm = 760 torr.
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 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.
Why is platinum coated with platinum black used in the standard hydrogen electrode?
The platinum black provides a very high surface area that promotes the speed of reaction at the electrode and thereby virtually eliminates overpotential at the standard hydrogen electrode. An overpotential would lead to misleading values of potential of other electrodes compared with a standard hydrogen electrode that manifested overpotential.
How do scientists measure the standard reduction potential of a half cell?
Scientists typically use a standard hydrogen electrode (SHE) as a reference electrode to measure the standard reduction potential of a half-cell. The half-cell under study is connected to the SHE through a salt bridge, and the cell potential is measured using a voltmeter. By comparing the potential of the half-cell with that of the SHE at standard conditions (1 M concentration and 25 degrees Celsius), the standard reduction potential of the half-cell can be determined.
Why primary cell have 1.5 V only?
It depends on the electron configuration. Different metals have single electrode potential. They are both +ve and -ve. We use standard Hydrogen electrode whose potential is taken to be 0. Using that we can find half potential. Then right from that we get the total potential of a cell. So it is all natures work
Can the saturated calomel reference electrode be used in strong alkaline media such as 2-5 N KOH solution?
No, the saturated calomel reference electrode is not suitable for use in strong alkaline solutions like 2-5 N KOH. The high pH environment can damage the electrode and affect its performance. It is better to use a reference electrode designed specifically for use in alkaline media, such as a silver/silver chloride electrode.
What type of electrodes use in pH meter?
pH meters typically use glass electrodes to measure the pH of a solution. These electrodes are sensitive to changes in hydrogen ion concentration and provide accurate pH readings. Additionally, reference electrodes are used in combination with the glass electrode to ensure reliable and consistent measurements.
Mention two limitations of standard hydrogen electrode?
1. Platinum foil gets easily poisoned by the impurities present in the gas and HCl. 2. It is rather difficult to regulate the pressure of the H2 gas to be at exactly 1atm throughout the experiment. 3. Excess of H2 bubbling out carries little HCl with it and hence the H+ concentration decreases. In such a system, it is difficult to maintain the concentration of HCl at 1M. 4. It can not be used in the presence of oxidizing agents.
Can cars run on water?
Yes,if you use electrolysis to diffuse oxygen from hydrogen.You will have to suck the hydrogen from the electrode the compress it to make it a liquid now you can use it as fuel.(This is my invention).
How to measure the pH using hydrogen electrode?
pH = -log [H+] So collect the hydrogen gas in a syringe and measure the volume. Moles of hydrogen can be found using; n = PV / RT Pressure should be 1atm Temperature will be around 293K R is 8.314 * atm/mols V is the reading on the syringe Now that n (of hydrogen gas) is calculated we can find the moles of hydrogen ions using a stoimetric (balanced) equation With that done use; C = n/V V being the volume of the solution that you electrolysed The C is the concentration of H+ ions and now can be subed into the equation; pH = -log [H+] to give pH
Which antifreeze do you use for a 93 mercury villager?
You can use any standard antifreeze, there is no special type required.
What is a Hydrogen Fuel Cell?
Hydrogen fuel cells are very similar to batteries. They use a chemical reaction between atoms to produce their energy. •It has two electrodes, an anode and a cathode, separated by a membrane. Oxygen passes over one electrode and hydrogen over the other.
