"Ionic reactions lab report" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 10 of 50 - About 500 Essays
  • Powerful Essays

    this reaction at 25(C.  A.  1020 kJ/mol B.  -1.22 ( 103 kJ/mol C.  2.00 ( 103 kJ/mol D.  -1.42 ( 103 kJ/mol E.  -198 kJ/mol 2. For the reaction H2(g) + S(s) ( H2S(g)‚ (H( = -20.2 kJ/mol and (S( = +43.1 J/K·mol. Which of these statements is true?  A. The reaction is only spontaneous at low temperatures. B. The reaction is spontaneous at all temperatures. C. (G( becomes less favorable as temperature increases. D. The reaction is spontaneous

    Premium Oxygen Nitrogen Chemistry

    • 582 Words
    • 3 Pages
    Powerful Essays
  • Good Essays

    From the results recorded it was identified that activity A and C had exothermic reactions‚ whilst activity B had an endothermic reaction. Each of the activities had initially begun with 23.4/8/9oC‚ however‚ within one minute of adding the 2nd reactants‚ the results began showing‚ as seen from the graph. Activity A and C had risen in temperature‚ with A gaining 4oC and in total of 2 minutes having the temperature of 27.9oC along with C increasing by 2.2oC and within 2 minutes of the experiment having

    Premium Chemical reaction Chemistry Reaction rate

    • 500 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Concentration‚ Along with Varying Temperature and pH-Balanced Environments on the Enzyme-Catalyzed Reaction of pNPP Abstract: Introduction: Many of the chemical reactions‚ which take place in in living things are controlled by enzymes. In such cases‚ the enzyme is a protein in the cell which lowers the activation energy of a catalyzed reaction‚ which serves to increase the rate of the reaction. Alkaline phosphatase is made throughout the body. Its function is to remove phosphate groups

    Premium Enzyme Catalysis Chemical reaction

    • 1771 Words
    • 8 Pages
    Better Essays
  • Satisfactory Essays

    In order to first perform the reaction‚ 1.5 mL of 4-methylcyclohexanol was added to a pre-weighed 5mL conical vial. The conical vial was then weighed to find the actual mass of 4-methylcycloheaxanol. Then‚ 0.4mL of 85% phosphoric acid was added to the conical vial using a plastic pipet. Six drops of concentrated sulfuric acid was then added to the vial using a glass pipet. A spin vane was then added before adding the Hickman head‚ water condenser and a drying tube packed with calcium chloride to

    Premium Erlenmeyer flask Sodium hydroxide Laboratory glassware

    • 324 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Reaction Lab

    • 1106 Words
    • 5 Pages

    Title: Surface Area vs. Rate of Reaction Research question: How can different temperatures affect the rate of reaction‚ when the reactant is in powder form? Hypothesis: If the temperature of the water is increased‚ the rate of reaction will also increase as the heat given off to the particles will increase leading to more movement and frequent collisions. Background information: Chemical reactions occur when two or more molecules interact with each other‚ but that can only occur when they

    Premium Chemical reaction Chemistry Reaction rate

    • 1106 Words
    • 5 Pages
    Better Essays
  • Good Essays

    Chemical Reactions Lab

    • 868 Words
    • 4 Pages

    Chemical Reactions Lab Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab. Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: The reaction of CO2 and water is a prime example of a synthesis reaction. This is a synthesis reaction because it follows the general

    Premium Chemical reaction Oxygen Single displacement reaction

    • 868 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Chemical Reaction Lab

    • 2087 Words
    • 9 Pages

    Lab #5 Chemical Reactions & Balancing Equations Objectives Observe and classify several chemical and physical changes. Give evidence for the occurrence of a chemical reaction. Write a balanced equation for a chemical reaction. Identify a reaction as a combination‚ decomposition‚ replacement‚ or combustion reaction. Background Physical properties can be observed without changing the chemical composition of the substance. Common physical properties that can be measured without changing the chemical

    Premium Chemistry Chemical reaction Chemical substance

    • 2087 Words
    • 9 Pages
    Powerful Essays
  • Satisfactory Essays

    Step 1: Pb (NO3) 2 (aq) + CaCl2 (aq)  PbCl2 (aq) + Ca (NO3) 2 (aq) (double displacement reaction) According to the solubility guidelines lead (II) chloride (PbCl2) is a possible precipitate. This is because even though most chlorides are soluble‚ lead chloride is considered insoluble (p.2‚ Lesson 17). Step 2: PbCl2 ↔ Pb2+ + 2Cl- Q = [Pb2+] [Cl-] 2 Step 3: Ksp = 1.2 x 10-5 (from table 17.1‚ p.5) Step 4: V2 = 20.0 mL (volume of Pb (NO3)2) + 45.0 mL (volume of CaCl2) = 65.0

    Premium Solubility Hydrogen Solid

    • 361 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Chemical Reactions Lab

    • 651 Words
    • 3 Pages

    The Sequence of Chemical Reactions Drew Selfridge Dave Allen‚ Lab partner Instructor Yang February 11‚ 1997 INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form‚ but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process‚ however‚ some of the Cu+2 ions may be lost. The copper will subjected

    Premium Chemistry Copper Chemical reaction

    • 651 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Ionic compounds

    • 480 Words
    • 2 Pages

    Abstract: When ionic compounds are dissolved in water‚ they break apart into ions. In this lab the opportunity to mix two ionic solutions and observe the results was given. Some ions will remain dissolved and uncombined in the solution even when they are mixed with other ions. When other ions are mixed‚ they form compounds that appear as cloudy or grainy precipitates. The objective of this lab was to observe the formation of compounds and to write the names and formulas of ionic compounds. It is

    Premium Ionic bond Solubility Solid

    • 480 Words
    • 2 Pages
    Good Essays
Page 1 7 8 9 10 11 12 13 14 50