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What is a buffer solution? How to make a buffer solution?

Buffer solution is a system that minimises the change in pH when a small amount of acid or base is added. There are two types of buffer solutions- alkaline buffer solution and acidic buffer solution. The pH ...
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Answered by Laura B. • Chemistry tutor
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What is a formula of Potassium Sulfate?

First, look at the Periodic Table. Potassium is in group 1 so has a +1 charge, Li + Sulphates always have a -2 charge, SO4 2- Now combine two ions together so we can get a neutral compound. We have +1 charge...
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Answered by Laura B. • Chemistry tutor
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What is a rate of reaction? How can we calculate the rate of reaction?

Rate of reaction is a change in concentration of a reactant or product, per unit time, measured in dm 3 s-1. You can calculate the rate of reaction from the graph- plot the graph of concantration of reactant...
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Answered by Laura B. • Chemistry tutor
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What is the equation of the curve that has gradient dy/dx=(4x-5) and passes through the point (3,7)?

To answer this question, we must use our knowledge of integration and differentiation. First, we look at the information given to us. We have been told that the gradient of the curve is given by dy/dx=(4x-5)...
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Answered by Samradnyee K. • Maths tutor
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Define the terms atomic number and mass number

The atomic number, Z, is the number of protons in the nucleus. The mass number ,A, is the total number of protons and neutrons in the atom.
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Answered by Laura B. • Chemistry tutor
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