Which Double Replacement Reactions Will Form A Precipitate Or A Gas

3. Carefully felt the sides of the test tube and observed the resulted chemical reaction for about 30 seconds.

8. Upon the addition of NaCl (aq) to the test tube containing the supernatant, there would be no visible reaction, i.e. precipitate formation, since Na+ (aq) does not react with C2O4 2- (aq) to produce a precipitate whereas Ca2+ (aq) does react with C2O4 2- (aq) to form

Introduction – A double replacement reaction is a chemical reaction between two compounds where the positive ion of one compound is exchanged with the positive ion of another compound. If you have the reactants of two reaction solution that you can determine the products. All you need to do is pair the positive parts of the compounds with the other compounds negative part. Once you find the products you can determine their phase of matter by using Table H. You can also use Table F to determine the solubility guidelines for aqueous solutions. If the product falls under soluble or exceptions to insoluble it is in the aqueous stare. If the product falls under

This lab revolves around precipitate it reactions. The precipitate reactions happen when it had cations (positive atoms) and anions (negative atoms) in aqueous solutions combined to form an insoluble ionic solid, which is called a participate. In order for these reactions to occur they must be Aqueous and this can be determined by using solubility rules. Predicting these reactions a sign test to find out which ions are present in a solution. Double displacement reactions are the kinds used in this lab. This means that the compound will switch partners and form a bond with a different part. The reaction occurs in Aquarious solution and one of the products that is formed is in soluble.

In this laboratory, cations were tested. Once separating them, a spot test tested for the specific cations contained in the solution. Being able to test for precipitates can be very useful

The purpose of this week’s lab is to learn to demonstrate a double-replacement reaction of ionic compounds. To accomplish this, two ionic compounds will be mixed together and the product will precipitate out of solution. In this procedure, the product must be precipitated out of the solution and then weighed.

This caused a quick and energetic reaction! The gas from the reaction I pumped into some Limewater, which caused it to bubble and turn cloudy

Background Information: According to Steven S. Zumdahl and Donald J. DeCoste (Introductory Chemistry: A Foundation), “a double replacement reaction occurs when two cations and two anions are transferred. A precipitation reaction takes place when two aqueous solutions dissolve in water, and a solid forms between one of the cations and one of the anions” (Zumdahl/Donald 187). Zumdahl and Donald also say that evidence of a precipitate includes a color change, gas production, transfer of electrons, or the formation of water. All of these types of evidence occurred in this lab. Signs that a reaction has taken place

Most of the reactions took time to settle down to form a precipitate as seen in Diagram (1) which shows the before and after of magnesium hydroxide.

In the synthesis reaction of Barium Carbonate, a solid, BaCO₃, is formed. This reaction is demonstrated by the formula Ba+CO₃ → BaCO₃. Another example of a precipitate forming and indicating a chemical reaction, is shown by the shells of mussels and clams. The clam or mussel’s solid shell, which acts as the precipitate, is formed from chemicals from the sea water combining with chemicals from the creature, be it the clam or mussel. Basically, if a reactant produces a product that forms a solid, such solid, the precipitate, is sufficient evidence that a chemical reaction has

Silver nitrate and copper metal led to the formation of silver precipitate. We also observed a color change towards the bottom where the copper was located. These results support that the type of reaction was single- replacement. The second experiment with hydrochloric acid was an example of decomposition. We observed that the substance started to bubble and so a gas was produced.

As mentioned, this reaction is a type of single replacement reaction, and all single replacement reactions are exothermic, meaning they produce heat. This is because in the reaction:

A (non-metal) + BC → BA + C. Double displacement reaction is a chemical reaction, where the positive ions of two different chemical compounds exchange and produce two new compounds. The products may contain a precipitate. The general chemical equation of double displacement is: AB+ CD → AD + CB

When a chemical reaction happens atoms are rearranged and new chemical substances are formed. In a chemical reaction there are changes of energy often in the form of heat. Gases expand to fill any space that is available, however a gas is easier to see when it’s a bubble. Mixing baking soda and vinegar together will create a whole bunch of bubbles at once. Baking soda is made from the deposits of white water soluble solid in powder,however it is pulled out by a water process that uses no chemicals. Vinegar is a liquid including mainly of acetic acid and water. The amount of friction between objects depends on how hard objects, push against each other. Friction is the force that slows objects down when they rub together.

Metal displacement: A metal will displace a less reactive metal in a metal salt solution.