Suggest two experimental errors which would result in too low a value for the acid EW. Explain how these errors result in a low value.
We need to to AT LEAST two things. What is EW? What experiment did you do and the procedure?
the percent composition by mass of a compoun is 76.0%C, 11.2% O. The molar mass of its compund is 284.5g/mol.what is the molecular formula of the compound
Two experimental errors that could result in a too low value for the acid equivalent weight (EW) are as follows:
1. Improper handling of the weighing procedure: If the acid being weighed is not handled carefully during the weighing process, some of it may be lost or left behind, resulting in a lower than accurate measurement. This can happen if the acid spills or splashes during transfer or if it sticks to the weighing apparatus or container. In such cases, the measured mass of acid would be lower than the actual mass, leading to a lower value for the acid EW calculated based on this inaccurate measurement.
2. Incomplete reaction or titration: Acid EW is often determined by performing a reaction or titration with a known reagent. If the reaction or titration is not carried out to completion, it can lead to an underestimate of the acid EW. Incomplete reactions or titrations can occur if the reaction time is insufficient, the concentration of the reagent is not optimal, or if there are impurities or interfering substances present. In such cases, the reaction or titration may prematurely stop, resulting in a lower measured value for the acid EW.
To avoid these errors and obtain more accurate results for the acid EW, it is important to ensure proper handling of the acid during weighing, minimize transfer losses, and use appropriate techniques and precautions to prevent spills or splashes. Additionally, ensuring that the reaction or titration is allowed sufficient time to proceed to completion and using appropriate concentrations and techniques can help avoid underestimation of the acid EW.