Chem Lab

Introduction: In this experiment, calcium chloride was reacted with sodium hydroxide deal out to the following fit equation: CaCl2(aq) + 2NaOH(aq) Ca(OH)2(s) +2NaCl(aq) The purpose doing this reaction was to practice session stoichiometry calculations. Stoichiometry is the process of keeping track of the quantitative relationship among reactants and produces in a reaction. In a stoichiometry fuss, the coefficients in the equilibrise equation provide the correction number of moles of each substances that is unfailing to complete the reaction. Often in a reaction, there is a narrowing reagent since the exact proportions of moles of the reactants are not present. Thus, a limiting reagent is the reactant that determines how far the reaction will go before do the it to stop since there are fewer moles of it than the proportion requires. When play a limiting reagent stoichiometry problem, one is given the starting amounts of the reactants which should b e converted into moles. Next, the problem should be treated as twain separate problems, and each amount of moles of reactants should be multiplied by the proportion of harvest-home to reactant. This will solve for the amount of product that can be made with each of the two icy reactants.

The correct amount of product that can be produced is the smaller of the two values since that reactant limits the production of product. In this lab, the theoretical introduce down of the equation is found by using the instance of stoichiometry problem mentioned above, and the actual stand is how much product is genuinely form in the lab. The percent yield, a comparison amidst theoretic al and actual yield, is than found using the! equation: percent yield = (actual yield / theoretical yield) X 100% info and Calculations: balance Equation: CaCl2(aq) + 2NaOH(aq) Ca(OH)2(s) +2NaCl(aq) Table 1: Results great deal of CaCl2 Added (mL)| Volume of NaOH Added (mL)| potful of Ca(OH)2 Obtained (grams)| 5.00| 2.97| .26|...If you want to get a full essay, install it on our website: OrderEssay.net

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