The oxidation state method is an “electron bookkeeping method” devised by chemists to help assign a number called oxidation number to an atom. This oxidation number tells us how many valence electrons …
What types of chemical reactions generate electricity?
Chemical reactions that can generate electricity are called REDOX reactions. REDOX reactions occur in the batteries you usually buy to power your electronic devices. REDOX reactions consist of two …
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How does the vapor pressure of solution depend on the concentration of the solute particles in it?
The vapor pressure of solution depends on the concentration and NOT the identities of the solute particles in the solution. This is because adding a non-volatile solute such as salt to pure water …
Why is it that the vapor pressure of salt water is lower than the vapor pressure of pure water?
Salt water has a lower vapor pressure than pure (distilled) water because salt water evaporates at a slower rate than pure water. Let’s use the following illustration to further explain …
What are the mechanisms (ways) in which energy can be transferred by heat?
Energy can be transferred by heat in three ways. These are: conductionconvectionradiation This transfer usually occurs because of a difference in temperature between the things (systems) …
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How do you prepare a buffer solution of known pH from scratch?
How do you prepare a buffer solution of known pH from scratch? To prepare a buffer solution of known pH from scratch, we must carry out the following steps: choose a conjugate acid-base pair …
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