Students were asked to determine how many grams of hydrofluoric acid (HF) are required to react completely with 23.68 grams of calcium hydroxide in the following reaction? _1_ Ca(OH)2 + __2_ HF à __1_ CaF2 + __2_H2O

Based on the stoichiometry of this problem, the theoretical yield for this problem is 12.79 g HF. But, when the students actually conducted the experiment, their actual yield was 10.41 g HF collected.

What is the percent yield of HF?

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

the answer is 75.0%.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.