CHEM 1210 Lecture Notes - Fall 2018 Lecture 13 - Chemical equation, Spectator ion, Sodium hydroxide
20 Sep 2018
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In addition and subtraction, significant figures are limited by the least significant places: 1200000 and 17 added together would result in a number that could only have 2 significant figures because the 0s in 1200000 are not surely significant. When percentage is given of elements in a compound, always assume 100g, then calculate moles, then the empirical formula. Acids ionize in water to produce h+ Only the first proton is fully dissociated. Weak acids are weak electrolytes-- mainly made of molecules. Weak bases produce oh- by reacting with water. Neutralization reaction: strong acid and strong base. Neutralization reaction results in h20 and some form of salt. To get the ionic equation of a neutralization reaction: write out and balance reaction, break apart acid, base, and salt (not the water, cancel out spectator ions. These are ions which appear on both sides of the reaction equation: the result is the net ionic equation for neutralizing a strong acid and base.
