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Potassium Essay Examples

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Solution Calorimetry: Thermodynamics of Potassium Nitrate

A determination of thermodynamic variables of KNO3 is presented. KNO3 was heated and dissolved in varying volumes of distilled water. Upon dissolution, the KNO3 solution was removed from heat and the temperature was recorded once crystals formed. For each solution, ∆G the Ksp were found with the temperature and molarity values. ∆H and ∆S were…

Worksheet – Membrane Potentials

Introduction to Membrane Potentials 1.Describe the neuron function. Neurons act to facilitate the transfer of data amongst the body’s cells sustaining homeostasis 2.Contrast graded potentials and action potentials. Graded potentials are electrical signals that have variable amplitude, are localized, and travel short distances along the membrane. In contrast, an action potential has a fixed amplitude,…

Persulphate and Potassium Iodide

The rate of which the reaction happened can be found out by using the simple formulae: Speed = Distance Time Distance is what we call the persulphate because we are measuring the amount of persulphate needed to react. The amount of persulphate will always be the same at the end so it doesn’t matter how…

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A potassium nitrate solution

So in summary I predict that the greater the concentration of Potassium Nitrate, the greater the ROR. I predict to see two graphs similar to these. Equipment  Potassium Nitrate  Water Measuring cylinder  Power supply  Carbon electrodes  Ammeter Beaker Method I will set up the equipment up as shown below: I will then turn the power…

Estimating the Iron(II) content in an iron tablet using a standard solution of potassium manganate (VII)

Calculating the amount of iron(II) present The iron was oxidized from its 2+ state to 3+ by sulfuric acid: And the manganate iron was reduced as follows: This half equation is balanced as follows: Since the above equation involves the transfer of five electrons, the equation involving iron needs to be multiplied by five before…

Design – Potassium Dichromate

Introduction: The reaction that is carried out in this design practical is between acidified Potassium dichromate and Iron wool. The reaction is a redox reaction. A Redox reaction (a short way of saying “reduction-oxidation reaction”) is the simultaneous transfer of electrons between multiple substances. The oxidation numbers or the oxidation state of atoms is changed…

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