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The pH scale:
The equation: pKw=14.00=pH+pOH is obtained by taking the negative logarithm to the base 10 of the autoprotolysis equation, where
In general pX denotes -log10 of any given variable X, so that an increase in X results in a decrease in pX. This equation applies in all aqueous solutions. It allows the definition of the pH scale for water acidity from the pH of a solution, pOH ions can always be found from this equation, and the balance of these terms determines the water acidity. For example, when pH=7, then pOH=7 and the water solution is neutral (ph=7), as the activities of both H3O+ and of OH- are equal at 10-7. When pH+<7 and pOH->7, the solution has an excess of H3O+ and is described as an acidic solution. When pH+>7 and pOH_<7, the solution has an excess of OH- ions and is described as a basic solution.
What are Cell diagrams? Consider the galvanic cell depicted in Figure. This cell has a hydrogen electrode at the left and a silver-silver chloride electrode at the right. The h
How is chemistry important in medicine & healthcare?
priming and foaming define?
Binary phase diagrams of two component systems are usually Two dimensional plots of temperature and composition.
How do I cite information that I get from this website? Specifically, I''d like to know what textbook this comes from: http://www.expertsmind.com/topic/chemistry/solvent-extractio
Empirical formula Empirical formula of a substance provides the simplest whole number ratio among the atoms of the various elements exist in one molecule of the elements. For i
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Bohr's radius can have: (1) Discrete values (2) +ve values (3) - ve values (4) Fractional values Ans: +ve values
Rutherford's experiment on scattering of particles showed for the first time that the atom has: (1) Electrons (2) Protons (3) Nucleus (4) Neutr
Why was covalent compounds are insoluble in water and ionic compounds soluble in water? Ans) When ionic bonds form, one atom becomes positively charged, while the other becomes ne
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