StarLife

Hey Moons! Hope you can benefit from this! Below here are the question and basic report. While here are my report. Pardon the terrible writing. The calculation part are the important ones.   Here I'll insert some of the pictures I took. These are the three solutions + with KA4 which is solid sodium hydrogencarbonate.   Right are before KA3 is added. Left are after KA3 is added. Notice that it became slightly darker. This is after all three solution were added with four drops of starch (minimum is 3 drops). Supposedly it turns dark blue, it did when I drop in the starch but after that it just became a darker shade of brownish grey so I don't know what happened. Everyone got the same and all the chem teacher said normal sooooooo *shrugs* This is after titration. Stop when the solution turns colourless and record the final volume. So there you go. Always remember to make sure

  Here are the answers to the experiment.   Report   Day : Date : Topic : Volumetric Analysis - Stoichiometry Purpose : To determine the exact concentration of a monobasic acid, HX Apparatus : 250 cm3 volumetric analysis with stopper, 25.0 cm3 pipette, 50.00 cm3 burette, retort stand with clamp, filter funnel, glass rod, pipette pump, electronic balance, conical flask, 50 cm3 beaker, dropper, spatula, 250 cm3 beaker Materials : Phenolphthalein as indicator, distilled water, solid sodium hydroxide, NaOH, monobasic acid, HX Theory introduction : Neutralisation occur when an acid react with base. In laboratory, the concentration of an unknown acid can be determined using titration technique. Therefore, this experiment is conducted to determine the unknown acid concentration. Procedure :        Part A A spatula was used to transfer solid sodium hydroxide, NaOH, into a 50cm3 beaker placed on a electronic balance. 5.02 g* of solid sodium hydroxide, Na

    Hey Moons! I can't give you the calculations as they are not accurate. But I'll include the answer in the table and the manual.   

   These are the answers and part of the manual. Unfortunately I deleted the first page so I only have the rest. Sorry for that. If I found it, I would include it as well.  

                 Hey Moons! There are the answers and the manual. Hope you can benefits from this and cheers!