====== Acid and Bases ======
===== Acid =====
* Acidic in taste
* Acids disassociate one proton (H+) at a time
* Types of acids: Monoprotic((1 H+)), Diprotic((2 H+)), and Polyprotic((many H+))
* **Bronsted-Lowry Acids** are important and they donate H+ in water
===== Base =====
* Bitter/poisonous
* Slippery when wet
* Most cleaners are basic == **alkaline**
* **Bronsted-Lowry Bases** are similar to their acid counterparts, they accept an H+
===== Strong vs Weak Acids and Bases =====
* Strong acids/bases completely ionize or disassociate in water, weak ones do not
* Less than 1% of a weak acid/base will dissociate
Note: Weak acids are extremely dangerous, HF on your skin will put amputation in your near future.
==== Strong Acids ====
* HCl
* HBr
* HI
* HlO4
* H2SO4
* HNO3
==== Strong Bases ====
All group I + II Hydroxides are strong bases((examples include LiOH, NaOH, Ca(OH)2, Ba(OH)2, etc.))
===== Amphiprotic =====
Also called Amphoteric, these are ions that behave as either acids or bases. Water is an example of one.
===== pH scale =====
pH is a logarithmic scale to measure the acidity of a solution. Acids are between 0-7, bases are 7-14, and an exact value of 7 represents a neutral substance.
==== Calculating pH (and pOH) ====
These equations can be used to calculate the pH of a substance. pOH is useful for determining the basicness of a solution.
* $\text{pH} = -\log{H^+}$
* $\text{pOH} = -\log{OH^-}$
Taking the inverse log(($10^x$ or $\log{x}^{-1}$)) can return the amount of H+ and OH- as indicated by the formulas above.
* $H^+ = 10^{-\text{pH}}$
* $OH^- = 10^{-\text{pOH}}$
==== Relationship between pH and pOH ====
Since the pH scale goes between 0 and 14, $\text{pH} + \text{pOH} = 14$. Also, using the rules in the section above, it can also be determined that $H^+ \times OH^- = 1 \times 10^{-14}$. This all assumes that the temperature is **25 °C**. You can still use this if the temperature isn't stated.