Solubility equilibrium

calcium hydroxide and barium hydroxide. Weak bases produce a very low concentration of hydroxide ions, and thus, are poor conductors of electricity. Ammonia and ethylamine are examples of weak bases. As shown in the reaction below, the position of equilibrium gives the reactants an advantage. Strong base: BOH + H2O → B+ (aq) + OH‐ (aq) Weak base: NH3 + H2O ↔ NH4 + (aq) + OH‐…

properties and reactivity, and also its synthesis.1 To accomplish this goal, we carried out five tests, the conductivity, solubility, cation, and anion tests because they revealed the identity of unknown sample 3.3 In addition, we carried out five reactions, reacting…

This displays that the ocean is at equilibrium. However, there is a nonstop flow of ions going in and out of the ocean from nearby rivers that feed into the ocean (Duke University, n.d.). The salinity at the surface of the ocean depends on rain fall which means it is always changing (Kemker…

From the data given in Table 1, there are a total of four mixtures present in the whole activity. This is because the main mixture which is the salt, sand, chalk, and water mixture can’t be separated using only one separation technique; it should be separated by parts. First, a filter paper was used to separate the salt and water from the chalk and sand. is the filtration process, a separation technique using a filter paper to separate solid particles in a liquid. Second, acid dissolution, using…

[1]. LOR is a drug belonging to a class II in the biopharmaceutics classification system (BCS), which it has low solubility in water and high permeability [2]. Moreover, LOR is a weak base with a pKa of 5.0 and its solubility is affected by pH media [3]. Accordingly, LOR has the lowest solubility at pH 7.5 and the highest at pH 1.2 [2]. It is known that a drug with either poor solubility in water or low permeability often causes low bioavailability. The efforts to…

Chromatography Abstract: The purpose of this lab is to use chromatography to separate and purify organic compounds. There are many different types of chromatography but most depend on the principle of adsorption. The two important components of chromatography are the adsorbent and the eluent. Adsorbents are usually solid materials that will attract and adsorb the materials to be separated. The eluent is the solvent, which carries the materials to be separated through the adsorbent. After being…

Endothermic or Exothermic? The energy changes lab was an interesting lab in which the class compared two chemical reactions, the solute baking soda and the solvent vinegar, and the solvent baking soda solution with the solute of calcium chloride to see whether the changes were endothermic or exothermic reactions. I concluded that vinegar and baking soda was the endothermic reaction and baking soda solution and calcium chloride was the exothermic reaction. I knew this because in the vinegar and…

1. 4 agar plates were poured several days ahead in preparation for this experiment. They were stored in a Ziploc bag in the refrigerator until ready to use. 2. To perform this experiment are the: cultures of E. coli, S. cerevisiae, and S. epidermidis, three plastic inoculation loops, candle and lighter, three poured nutrient agar plates, a disposable cup, alcohol, paper towels, bleach, a permanent marker, gloves, mask, apron, and goggles. 3. Be sure to wash hands carefully with disinfectant…

Emma Kilgore Science Period 2 January 12, 2016 The Evaporation of Liquids When a liquid is left in a warm car over a certain period of time some people might notice that the liquid seems to have lessened. This is because of evaporation, evaporation is when a liquid changes into a gas because of an increase in temperature or pressure. This brings up many questions having to do with liquids and evaporation so, do all liquids take the same amount of time to evaporate?…

The Freezing point of water is 32° fahrenheit, But does anything affect the freezing point of water? The effect of salt and sugar lowering water’s freezing point is called Freezing Point Depression(FPD). When water freezes, its molecules slow down and “stick” together, and eventually slow down so much they stay in place and become a solid. However when salt or sugar is added, it “interferes with the formation of the crystalline bonds between water molecules that give ice its solidity”, Written…