Science Classroom Connection

Students are to solve the problems on page 395, #’s: 90, 91, 92, and 93 that focus on the percentage yield through the determination of the limiting reactant in the chemical reaction.

As we continue with our problem-solving endeavors, students will begin to apply the limiting reactant for the determination of the percent yield in a chemical reaction so that they can figure out the efficiency of the reaction as such: Students will compare the actual yield in a chemical reaction to its theoretical yield and multiply that answer by one hundred to determine the percentage yield!

Students will work in groups of three to determine the mass of a dry precipitate that resulted from a chemical reaction that they have carried out in the lab on day 1. Students will follow a set procedure to carry out the reaction and obtain the precipitate through a delicate process with the help of a beaker, filter paper, and Buchner funnel that are utilized with running water. As a further reinforcement on day two, students are expected to determine the limiting reactant in this reaction as we will extend our discussion and elaborate upon the idea of percentage yield on day 2 in order for the students to utilze their data to determine the efficiency of their reaction and thus their work!

Students will complete the problems that were assigned on page 394, and we will do #82 on said page in class as we will do further reinforcement on our study of the limiting reactant.

Students are to REDO the example on page 382 and problem #23 on page 383 that we have already explained in class. Furthermore, they are to do problem #24 on page 383. Tomorrow, students will practice further on problems that center on the limiting reactant.

A chemical reaction stops when one of its reactant is used up. Students will identify the limiting reactant in a chemical equation through quantitative analysis, identify the excess reactant and be able to calculate the amount that remains after the reaction is complete. Furthermore, students will learn how to calculate the mass of a product when the amounts of more than one reactant is given.