Unit 1 And 4 Reaction Lab Report

The design relied on two Schmitt triggers to generate the two different tones while using the transistors to act as a switch. This causes it to trigger continuously between two unstable states, allowing automatic switching between two frequencies producing two different tones. The RC values between the two Schmitt triggers will differ. Capacitors charge and discharge faster when it’s resistance is smaller.

All matter is made of particles called atoms. An atom is smallest unit of matter. A matter can be solid, liquid or gas. When a group of atoms bond together this makes a molecule. The molecule is the base of chemical compounds that is involved in chemical reactions.

Introduction Alka-Seltzer has been on the market since 1931 and has helped to relieve indigestion and upset stomach. The tablets began to fizz and bubble when dropped into water. “The fizziness happens when baking soda (sodium bicarbonate) and citric acid react chemically in water. They yield sodium citrate, water and carbon dioxide gas, which causes bubbles.” Based on this information, we will measure the reaction time of AlKa- Seltzer dissolved in 200 ml of water at 3 different tempertures in the first portion of this experiment.

The insoluble precipitate, AgCl, is a solid. NaNO3 is aqueous because it's soluble in water. AgCl precipitated out of the solution because it's insoluble in water (7). If an ion is insoluble, then it forms a solid with an ion from the other reactant (7). The chemical equation

Because of this, we were able to predict what would happen when they were mixed. We put them into equations and calculated, using the solubility table on our periodic table sheet, what the reaction would be if we mixed each of the seven chemicals with one another and made a table of precipitants based on that. It was difficult to compare solid precipitants formed by various reactions, so we were unable to identify which was which though that. Luckily, one of the chemicals looked different compared to the others. NiCl2 solution was green unlike the other white ones; thus we were able to immediately determine which chemical the green one was.

Explain why the reaction between sodium sulphate and silver nitrate did not occur even though sodium sulphate is insoluble in the most part? The reaction did not occur because the solution was mixed with 0.1M of silver nitrate and 0.1M of silver nitrate is not strong enough for the reaction to occur. If silver nitrate contained more than 0.1 mole, the reaction would have occurred because silver sulphate is insoluble and is a solid. Why is it needed for barium nitrate and ammonium sulphate to dissolve into water separately first before mixing the two together?

-3 Step 3: The chemical equation: H2SO4(aq) +2NaOH(aq) --> Na2SO4+ 2H2O 1mol 2mole Molar ratio = H2SO4:NaOH =

The solubility rules determined whether a compound would form a precipitate or not. These rules have stated that some compounds such as acetates, nitrates, and iodides are soluble. Similarly, compounds such as carbonates, phosphates, and sulfides have been stated as insoluble. These rules helped to predict the products of the new compounds that were created. The reactions that took place were are double replacement reactions.

Dissolution is the process that makes solutions. A solution is a homogenous mixture of two or more substances. The solute in the solution is the substance that is dissolved, while the solvent in the solution is the substance that dissolves the solute during dissolution. The question introduced in this lab is “What factors influence the rate at which one substances dissolves in another?” The three factors that affect the rate of dissolution are temperature, how much you stir the mixture, and the particle size of the substances.

+ H2O (g) Reaction 4: when a sulphuric acid is added to the solution that contains copper (II) oxide, a double displacement reaction will occur. the copper (II) oxide will react with the sulphuric acid producing copper (II) sulfate and water. The copper and hydrogen gas replace each other. Balanced Chemical Equation: CuO (s) + H2SO4 (aq) —> CuSO4 (aq) + H2O (l) Reaction 5: when zinc is added to the copper (II) sulfate solution, a single displacement reaction will occur.

The resulting solution was then split into four test tubes which either had Fe(NO3)3, NaSCN, and NaH2PO4 added to them. Finally, the enthalpy of the reaction was evaluated by

Properties of Ionic and Covalent Substances Lab Report Introduction The purpose of this lab was to determine which of the following substances: wax, sugar, and salt, are an ionic compound and which are a covalent compound. In order to accurately digest the experiments results, research of definitions of each relating led to the following information: ionic compounds are positive and negatively charged ions that experience attraction to each other and pull together in a cluster of ionic bonds; they are the strongest compound, are separated in high temperatures, and can be separated by polar water molecules. A covalent compound forms when two or more nonmetal atoms share valence electrons; covalent compounds are also

Section A. Introduction After studying the differences between weak and strong electrolytes and completing a laboratory exercise regarding determining the pKa of a weak acid, I became intrigued by the factors that affected the partial ionization of a weak acid. After learning about Le Chatelier's ionization of a weak acid with the addition of a common ion. This investigation will observe the percent ionization of a weak acid when its ionic strength, a quantitative measure of the concentration of ions in a solution, is varied with the addition of salts. This investigation is done in hopes of finding an effective way to further ionize a weak acid, beyond the conditions of the surrounding environment, for application in the real world.

Properties of Ionic and Covalent Substances Lab Report Introduction The purpose of this lab was to determine which of the following substances: wax, sugar, and salt, are an ionic compound and which are a covalent compound. In order to accurately digest the experiments results, definitions of each relating factor were researched, leading to the following information: ionic compounds are positive and negatively charged ions that experience attraction to each other and pull together in a cluster of ionic bonds; they are the strongest compound, are separated in high temperatures, and can be separated by polar water molecules. A covalent compound is formed when two or more nonmetal atoms share valence electrons; covalent compounds are also categorized into two sections: polar covalent and nonpolar covalent. Furthermore, polar covalent compounds dissolve in water, while nonpolar covalent compounds do not.

The first Ksp ended up to 1.74 x 10-10 M. The second value was calculated to be 1.46 x 10-10. Lastly the third value ended up being 1.57 x 10-10. These three values ended up having an average Ksp of Ag2CrO4 was 1.59 x 10-10. Discussion/Conclusion: The purpose of this lab was to determine the solubility-product constant value of Ag2CrO4.