Question:

pH Meter Use Solutions are homogeneous mixtures consisting of a solvent and one or more solutes. The solute is the stuff that dissolves in the soluti

pH Meter Use
Solutions are homogeneous mixtures consisting of a solvent and one or more solutes. The solute is the stuff that dissolves in the solution. When water is used as the solvent, an aqueous solution is formed with the water molecules surrounding the solute particles and weak bonds are formed between the water molecules and the solute particles. In the case of ionic solutes, also called salts, the ions separate into cations and anions which are then surrounded by water molecules. We will prepare several aqueous solutions and measure their pH in this experiment. In each case, deionized (DI) water should be used as the solvent and thorough mixing should be achieved by using a stirring rod or pouring back and forth or shaking the solutions until a uniform mixture with no further solid particles remain. Prepare the following solutions in small beakers and measure the pH of each solution using "pH paper" and the (already calibrated) meter. Record the pHs in the spaces provided
A. pH of different solutions
Solution                              pH by prediction                        pH by pH meter
Drain Cleaner                        -----------------                         ---------------
Hand Soap                            -----------------                        ---------------
Blood                                    -----------------                        --------------
Spit                                       -----------------                        ----------------
Water                                   -----------------                        ---------------

pH Meter Use Solutions are homogeneous mixtures consisting of a solvent and one or more solutes. The solute is the stuff that dissolves in the solution. When water is used as the solvent, an aqueous solution is formed with the water molecules surrounding the solute particles and weak bonds are formed between the water molecules and the solute particles. In the case of ionic solutes, also called salts, the ions separate into cations and anions which are then surrounded by water molecules. We will prepare several aqueous solutions and measure their pH in this experiment. In each case, deionized (DI) water should be used as the solvent and thorough mixing should be achieved by using a stirring rod or pouring back and forth or shaking the solutions until a uniform mixture with no further solid particles remain. Prepare the following solutions in small beakers and measure the pH of each solution using "pH paper" and the (already calibrated) meter. Record the pHs in the spaces provided A. pH of different solutions Solution pH by prediction pH by pH meter Drain Cleaner ----------------- --------------- Hand Soap ----------------- --------------- Blood ----------------- -------------- Spit ----------------- ---------------- Water ----------------- ---------------