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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 else can I help you with?
Explain the theory behind the potentiometric titration of acid base?
In potentiometric titration, the change in the concentration of H+ ions are monitored based on the emf measurement with respect to Saturated calomel electrode ( a reference electrode having a standard reduction potential of 0.2422 V). H+ ions concentration in terms of pH change is measured using primarily by quinhydrone electrode. Based on hydrogen electrode also it can be measured. An electrochemical cell consists of H+ ions (acid to be titrated) in contact with hydrogen gas (1 atm) or quinhydrone/ quinone should be formed and the emf (potential difference) of the cell is measured with reference to saturated calomel electrode (SCE). Then based on Nernst equation value of standard electrode potential of hydrogen ion is, EH = Eo + 0.0591 log [H+] or EH = - 0.0591 pH since Eo = 0 V and -log [H+] = pH So EMF of the cell is Ecell = ESCE - EH Ecell = 0.2422 - EH The Ecell value is plotted ( Y axis) against volume of base added (X axis). The volume corresponds to drastic Ecell change gives equivalence point of the titration. At equivalence point all the free H+ ions are replaced as H2O and this is reflected and can be inferred in the Ecell values.
Why KCl saturated with AgCl is used in Silver Silver chloride electrode?
KCl saturated with AgCl is used in the Silver-Silver chloride electrode because the presence of AgCl helps maintain a stable potential and ensures reproducibility of the electrode. The AgCl layer also provides a constant concentration of Ag+ ions at the electrode surface, which is essential for the electrode's performance in electrochemical measurements.
How many atoms of hydrogen appear on each side of the equation?
To determine the number of hydrogen atoms on each side of the equation, you would need to balance the equation first. Once the equation is balanced, count the number of hydrogen atoms on both the reactant and product sides to compare. The number of hydrogen atoms should be the same on both sides of the balanced equation.
How do you make oxygen from water?
The simple answer is you need to break the covalent bonds present in the water molecule. This will result in not just oxygen but also hydrogen (at a 1:2 respective ratio). One of the most common methods of intentionally performing this process is through electrolysis--using an electric current to break the covalent bonds. Plants do this by absorbing carbon dioxide during photosynthesis and emitting oxygen.
Why should you not wash and blot the pH meter during titrations?
Washing and blotting the pH meter during titrations can introduce errors in the measurements by changing the electrode potential or diluting the sample being measured. It is recommended to rinse the electrode with the titrant solution instead to maintain accuracy in the titration process.
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
What is the universally accepted standard of flexibility that you should compare yourself against?
There is no absolute measure of flexibility.
What is an oxidising electrode?
according to me anode should be oxidizing electrode as oxidation reaction takes place on anode
Why should you use a standard in measuring?
So that scientists all over the world can easily compare their results
Explain the theory behind the potentiometric titration of acid base?
In potentiometric titration, the change in the concentration of H+ ions are monitored based on the emf measurement with respect to Saturated calomel electrode ( a reference electrode having a standard reduction potential of 0.2422 V). H+ ions concentration in terms of pH change is measured using primarily by quinhydrone electrode. Based on hydrogen electrode also it can be measured. An electrochemical cell consists of H+ ions (acid to be titrated) in contact with hydrogen gas (1 atm) or quinhydrone/ quinone should be formed and the emf (potential difference) of the cell is measured with reference to saturated calomel electrode (SCE). Then based on Nernst equation value of standard electrode potential of hydrogen ion is, EH = Eo + 0.0591 log [H+] or EH = - 0.0591 pH since Eo = 0 V and -log [H+] = pH So EMF of the cell is Ecell = ESCE - EH Ecell = 0.2422 - EH The Ecell value is plotted ( Y axis) against volume of base added (X axis). The volume corresponds to drastic Ecell change gives equivalence point of the titration. At equivalence point all the free H+ ions are replaced as H2O and this is reflected and can be inferred in the Ecell values.
How do you check a reference electrode?
Measure a cyclic voltammogram (CV) of a well-characterized compound, such as ferrocene, whose reduction potential is very well known. If the potential you measure matches the literature value, then your reference electrode is fine. If it does not, then you can determine how far off it is from the difference of where the peaks in the CV should be compared to where you measured them.
What is the proper amount of arc length when welding?
A rule of thumb is - the arc length should be the same as the diameter of the electrode. 3/32" electrode = 3/32" arc length. 1/8" electrode = 1/8" arc length etc. The thicker the electrode coating the shorter the distance from the end of the electrode to the work. Drag rods are contact rods. E-7024 is one.
A part of an experiment to which you can compare the results of other tests?
Control
What is released during the splithing of water particles?
Water molecules (not particles) can be "split" into hydrogen gas (H2) and oxygen gas (O2) using electricity. The process is called electrolysis. If a DC current is applied which has sufficient voltage (about 1.5 V), oxygen will bubble off of the positive electrode, and hydrogen will bubble off of the negative electrode. Some kind of electrolyte, such as salt, should be added to the water to make it more conductive, since pure water is a very poor conductor of electricity.
How should you choose between taking the standard deduction and itemizing deductions?
When deciding between taking the standard deduction and itemizing deductions, you should choose the option that allows you to deduct the higher amount of expenses. Compare your eligible expenses to the standard deduction amount to see which option gives you the most tax benefit.
Why should you compare activities for applicability?
Why should you compare activities for applicability
What Pokemon should you add to your Pokemon Red team?
you should add flygon,wailord,ninjask,gardivor,electrode
