Determination of a sample size for an unknown weak acid in a titration with NaOH

Question

Determination of a sample size for an unknown weak acid in a titration with NaOH (Experiment 2). Determination of a sample size for the KHP in a titration with NaOH (Experiment 2). How to obtain a titration curve using a pH meter (Experiments 1 and 7). Techniques for neutralizing acids and bases (Experiment 2). How to prepare volumetric glassware and titration techniques Prepare data tables appropriate for this experiment. Do not submit these data tables as they will be evaluated in lab by your instructor and turned in with the experimental data sheet. You will not be allowed to begin the lab unless the following are correct completed. Calculate the amount of solid sodium hydroxide and the amount of water needed to prepare the solution in Part 1. Calculate the amount of 6M sodium hydroxide and the amount of water needed to prepare the solution in Part 1. (Same solution, but starting with a solution rather than a solid) Calculate the amount of KHP needed for the standardization of the sodium hydroxide solution. The equivalence point should occur around 35 mL What is the name of the solute in the first-aid solution in the laboratory that is to be used for base burns? A weak acid, HA, is titrated with sodium hydroxide. Fill in the missing information in the spaces and in the table below. The k_a for the weak acid is 1-80 times 10^-4. Use the same number of decimal places shown in each column.

Explanation / Answer

Prelab questions ans 1

Base burns can be caused in the laboratories when any base or alkali accidentally drops on the body of person. The first aid solution for such burn should contain a solution of weak acid, usually 5% acetic acid, so that it can neutralise the base and prevent further damage to the body part. So the solute is any weak acid eg acetic acid.

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