A 2.20-g sample of an unknown acid (empirical formula C3H4O3) is dissolved in 1.0 L of water. A titration required 25.0 mL of 0.500 M NaOH to react completely with all the acid present. Assuming the unknown acid has one acidic proton per molecule, what is the molecular formula of the unknown acid?
Adeline Fecker October 11th, 2016 CH 221 Lecture Notes Week 3 Exam Next Week Ionic Compounds: ❖ Form crystal lattice structure ❖ Exchange of electrons ❖ Ions lose/gain electrons so they have same electrons as the nearest noble gas ❖ Written as cation followed by anion ❖ Electrically neutral ❖ Simplest whole number combination ❖ There are no discrete molecules in ionic compounds ➢ Simplest ratio called formula unit Ex. NaCl Naming binary ionic compounds: ❖ Metal +nonmetal(ide) ❖ Sodium Chloride ❖ No numerical prefixes because they can be derived easily ❖ For ions with possibly more than 1 charge represent it with roman numeral
