Lab Report On Phosphoric Acid

If 5 moles of P4 reacted with 22 moles Cl2 according to the above reaction, determine:

The penny sample is next. Initaly three pennies were picked out, observed, weighed, and recorded. Then placed into the fune hood were three beakers with 25mL of 6M HNO_3 and one penny each. The reaction made by this process

Reaction 2 - 1.Used a Beral- type pipet, added about 2mL (40 Drops) of 1M hydrochloric acid solution to a small test tube.

The purpose of this experiment is to examine the stoichiometric relationship between reagents and the identity of the products by using three acid/base neutralization reactions of a triprotic acid, phosphoric acid, and varying molar equivalents of sodium hydroxide. The data will be used to determine the formula weight of the products and identify the remaining salt for all three reactions.

The practical was carried out to investigate the effect of pH on the reaction of the enzyme acid phosphatase.

3. Find the number of atoms of each of the substances involved in the reaction.

3.0g of salicylic acid was weighed then 3.0mL of acetic anhydride and 6 drops of 85% H3PO4 were added to it. The mixture was warmed over a water bath for 5 minutes while stirring. After warming, 20 drops of distilled water was slowly added. 15mL of water was added then the solution was heated until it became clear. It was allowed to cool and was placed in an ice bath until the solution becomes cloudy. Using pre-weighed filter paper, the mixture was filtered and was allowed to dry in the filter paper.

The objective of Day 2 of this lab was to remake the fertilizer from Day 1 with the given mass percentages of phosphorus, nitrogen, and potassium, this time adding 20% sulfur by mass. For this experiment it was necessary to adjust the pH of the final solution so that it was within pH 6 and 7 with sodium hydroxide and/or nitric acid.

Table 1: Properties of the reagents and possible products for the reaction. The boiling point of Phosphoric acid is not important because it is a reagent.

23. Measure the pH with a pH strip and record the data of the new solution in Table 3.

A total of 1.5 mL was added to produce a pH of around 6. The mixture was stirred for an additional 30 minutes.

In this experiment, a saturated calcium sulfate was already made and ready to use. 25.00 mL of this solution was then mixed with 10 mL of an ammonia buffer and 1 drop of

4) Try and propose a mechanism for the reaction using the orders of reaction taking into account the iodine, propanone and sulphuric acid.

4. Calculate the number of moles of NaOH used in reactions one and two. Show work here and record your answer in Data Table 2.

Acetic anhydride in pyridine: Mix one volume of acetic anhydride (AR grade ) and three volumes of pure dry pyridine