Postlab for Phun with Phosphates Lab - Laboratory Write-up...

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Laboratory Write-up for Phosphate BuffersChemistry 112 Lab Section 005November 12, 2014A.Research Questions1.What pH did the buffer components combined into a buffer solution have?2.Did the buffer solution or H2O maintain their pH better when acid or base was added?B.Observations and ResultsTablesTable 1. Buffer SolutionVolume (mL)100.0Concentration (M)0.0502pH6.36Table 2. Buffer ComponentsComponentMolar mass (g/mol)Mass (g)molsNa2HPO4·7H2O268.070.2680.00100NaH2PO4·H2O137.9920.5550.00402Table 3. Solution Buffering AbilityExperimental MeasurementpHDI water8.10Phosphate buffer6.36Buffer + NaOH6.47Buffer + HCl6.26NaOH in H2O11.00HCl in H2O2.96Calculated PredictionpHNaoH in H2O11.3HCl in H2O2.7NaOH in Buffer6.71HCl inBuffer6.49Calculations and AnalysisCalculations and analysis are attached on a piece of notebook paper.

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Term
Spring
Professor
N/A
Tags
Chemistry, pH, buffer solution

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