Title: Preparation of Sodium Peroxyborate Date: 26th January, 2021 Abstract Sodium Peroxyborate (NaBO4 .4H2O) was synthesised using the addition of diluted 30% H2O2 to sodium metaborate. The procedure produced the product with a 92.12% yield. Subsequent standardisation of the formed product via titration with KMnO4 revealed a ____% of available peroxide. This percentage illustrates the procedure accurately produced the desired hexahydrated perborate as it aligns with peer reviewed data from ____________. The procedure is very effective in forming peroxyborate solid, however, it is not very effective at making the hexahydrated compound over the monohydrated product. Introduction NaBO4 .4H2O is plays an integral role in the detergent industry where it serves as a stable source of active oxygen in cleaning products. Due to its slow release of peroxide, it is also commonly used as a gentle source of H2O2 instead using of pure H2O2. During the synthesis of sodium perborate, borax and sodium hydroxide was used to form sodium metaborate which was later used to facilitate the precipitation of sodium peroxyborate with the addition of diluted 30% H2O2. The strong oxidising agent is added as it creates an equilibrium between the metaborate and the desired product. Based on the established equilibrium as shown below,Le Chatelier’s principle dictates the addition of the hydrogen peroxide in excess would shift the equilibrium to the left and produce more peroxyborate. In addition to using Le Chatelier’s principle, Reason for conducting experiment • - Relevance of information • - Awareness of the area • - Organization/ ow/grammar fl • Experimental Procedure Start with a list of all chemicals and equipment used then follow with notes on how each synthesis was carried out. Do NOT write lengthy, detailed procedures which simply reiterate the experimental notes in the manual, but DO include any modi cations you may have made. Results (Data Section) List all data obtained, in raw form, with observations made during the synthesis. An assessment of experimental accuracy of all measurements should be given. Record the yield and describe the product. Give the relevant equations for the synthesis and calculate the % yield based on the limiting reagent. Show the structure of all products. Any spectra recorded should be rmly attached to your notebook. Discussion Evaluate your results critically even if the data seem to contradict what you were expecting. Marks will be deducted if you do not compare your results with literature or expected values, i.e. reporting a MP of 120 °C by itself is useless, unless you discover that an authentic sample also melts at 120 °C. Reporting a magnetic moment of 10 BM with no comment is again cause for loss of marks. Conclusions If more than one possible interpretation is possible, these should be compared and contrasted. References fi fi All materials that you used in writing the report or to gather background information should be listed here. The ACS Style Guide is a standard guide for preparing this and is available in the Science Library and Chapters available on-line. Failure to cite material obtained elsewhere constitutes plagiarism and is grounds for immediate failure. Even if an idea from elsewhere is "put into your own words" rather than being copied directly or quoted, it must be referenced.
