Introduction
Sodium hydrogen carbonate or atomic number 11 bicarbonate is better know as bake daddy, and its uses in everyday life be numerous. Baking sparkling water acts as a deodorizer, household cleaner, exonerate extinguisher, tooth and denture cleaner, and even as an antacid. Because sodium bicarbonate is a naturally occurring compound, it can be used as an alternative to cleaning products that are potentially environmental harming agents.
In this experiment, the honesty of a baking club soda take will be determined. One method for preparing baking soda is through reacting diaphanous ammonium hydrogen carbonate with brine according to the spare-time activity equation:
NH4HCO3(s) + NaCl (aq) --> NaHCO3(aq) +NH4Cl(aq) Eq. 1
Brine contains sodium chloride, the compound needed to yield baking soda, as well as potassium chloride, lithium chloride, and calcium chloride. Once the reaction has been completed, the solid baking soda is filtered off, but some contaminants may be present in the solid.
The first step in determining the purity of the sample is to perform thermal gravimetric analysis (Experiment 7) on the baking soda sample to determine the pct composition of sodium bicarbonate in the sample.
A sample of the baking soda will be heated until it decomposes to leave solid sodium carbonate according to the following equation:
2NaHCO3(s) --> Na2CO3(s) + CO2(g) + H2O(g) Eq. 2
The calculated percent by mass of the sodium bicarbonate should be degree centigrade% or nearly 100% if it is pure; if the percent by mass significantly deviates from this percentage, then further experimentation is needed to determine what other substances are present in the sample.
The abet experimental procedure to determine the purity of the baking soda sample is a titration of a baking soda resolve and standardized hydrochloric acid, HCl. (Experiment 6) The hydrochloric acid will be standardized with sodium...If you demand to get a full essay, order it on our website: Orderessay
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