Why are chemical reactions often carried out using solutions? Select all that apply. O The molecules or ions in a solution can freely intermingle. O A color change will always occur when a reaction is conducted in solution. O The amount of each reactant can be controlled by adjusting the volume of each solution that is used. O Even very small amounts of reactants can be combined by using dilute solutions. O The heterogeneous nature of solutions prevents the reactants from freely mixing. O The solvent must always be water, so it is impossible for a fire to start.

Why are chemical reactions often carried out using solutions? Select all that apply. O The molecules or ions in a solution can freely intermingle. O A color change will always occur when a reaction is conducted in solution. O The amount of each reactant can be controlled by adjusting the volume of each solution that is used. O Even very small amounts of reactants can be combined by using dilute solutions. O The heterogeneous nature of solutions prevents the reactants from freely mixing. O The solvent must always be water, so it is impossible for a fire to start.

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 108A: Apply Students conducted a lab to investigate limiting and excess reactants. The students added...

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Apply Students conducted a lab to investigate limiting and excess reactants. The students added different volumes of sodium phosphate solution (Na3PO4) to a beaker. They then added a constant volume of cobalt(ll) nitrate solution (CO(NO3)2) stirred the contents, and allowed the beakers to sit overnight. The next day, each beaker had a purple precipitate at the bottom. The students decanted the supernatant from each beaker, divided it into two samples, and added one drop Of sodium phosphate solution to one sample and one drop of cobalt(ll) nitrate solution to the second sample. Their results are shown in Table 11.5. a. Write a balanced chemical equation for the reaction. b. Based on the results, identify the limiting reactant and the excess reactant for each trial.