a piece of marble which is calcium carbonate. When all action had ceased‚ 1.30g of the marble had dissolved. Find the concentration of the acid Equation: CaCO3 + 2HCl CaCl2 + CO2 + H2O 6. What volume of 0.1 moldm-3 hydrochloric acid would be required to dissolve 2.3 g of calcium carbonate? Equation: CaCO3(s) + 2HCl(aq) CaCl2(aq) + CO2(g) + H2O(l) 7. 2.05 g of the carbonate of an unknown alkali metal (X2CO3) required 8.9 cm3
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in the determination of hardness of water? 6. Discuss which of the following substances will increase‚ decrease or have no effect on the hardness of water: Ca (OH)2‚ Mg(HCO3)2‚ MgSO4‚ Ca(HCO3)2‚ CaSO4‚ CaCl2‚ KCl‚ NH4Cl‚ NH4OH‚ NH4)2CO3‚ Na2SO4‚ BaCO3‚ NaCl‚ NaOH‚ Na2CO3‚ Na3PO4‚ NaAlO2‚ Na2[Na4(PO3)6]. 7. 0.5 g CaCO3 was dissolved in dil HCl and diluted to 500 ml. 50 ml of this required 40 ml EDTA. 100 ml hard water required 50 ml EDTA and after boiling 50 ml consumed 20
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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
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along with your student information card Additional Question Guidelines: Include the answers to the additional questions below in your lab report. F. Lets say we decided to run this experiment again. This time we used 1.0 gram of CaCl2·2H2O and 1.0 gram of Na2CO3. a)How many grams of CaCO3 would we produce? Please show/explain how you found your answer.
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(milk white) | double-displacement reaction | Pb(NO3 )2(aq) + H2SO4(aq) --> PbSO4 + 2HNO3 | 6. CaCO3 (s) appears to dissolve and lot of bubbles comes off out of container. | double-displacement reaction | CaCO3 (s) + 2 HCl(aq) --> CaCl2(aq) + CO2(g) + H2O(l) | 7. When copper sulfate hydrate was heated‚ we can see some white precipitate. | decomposition reactions | CuSO4·5H2O(s) → CuSO4(s) + 5H2O(g) | 8. Red litmus paper changes to blue color; white precipitate. | double-displacement
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Unit 2 Online Simulation-II (50 points) VLab: Precipitation Reactions: Data & Observations Navigate to: http://www.sascurriculumpathways.com/portal/#/search?searchString=&searchSubject=3&searchCategory=20 Enter the following username: job5circle (No password required) Enter 867 GO There are thirty-five combinations of aqueous solutions for you to investigate. (Note Table 1 on the Data Sheet.) Some of these combinations will produce precipitates; others will not. Step-by-step
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How Much Gas is Produced? Julie Dang June 23‚ 2013 Purpose The Company ABC Chemical has asked our group to investigate the gas production from a number of various chemical reactions. The company would like us to measure the amount of product we get when we measure the amount of gas from two reactions. We will then compare our data to the predicted amount which will we will calculate based of the Law of conservation of Mass and Ideal Gas Laws. Methods Materials Thermometer CaCO3
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about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. THE CHEMICAL INDUSTRY 2. CHEMICAL EQUILIBRIUM 3. PRODUCTION OF SULFURIC ACID 4. PRODUCTION OF SODIUM HYDROXIDE 5. SOAP & DETERGENTS 6. THE SOLVAY PROCESS FOR Na2CO3 ...all in the context of the applications of Chemistry in human society. 1. THE CHEMICAL INDUSTRY The “Invisible” Industry Most people are familiar with some aspects of the production and manufacture of the many goods we need and use every day‚
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group 1 metal M is determined by analyzing an unknown Group 1 metal carbonate‚ M2CO3. There are 3 main reactions in this lab: 1. Equation 1: M2CO3 (s) → 2M+ (aq) + CO32- (aq) 2. Equation 2: Ca2+ (aq) + CO32-(aq) → CaCO3 (s) 3. Equation 3: CaCl2 (aq) + M2CO3→ CaCO3 (s) + 2MCl (aq) The precipitated calcium carbonate is then filtered‚ dried‚ and weighed. The moles of calcium carbonate‚ CaCO3‚ are equal to the moles of Group 1 metal carbonate‚ M2CO3‚ added to the original solution. Dividing
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Sr(NO3)2 b. Na2CO3 g. CuSO4 c. BaCl2 h. CuCl2 d. Al(OH)3 g. PbS e. Zn(CH3COO)2 6. Complete the following double replacement (exchange ) reactions. Be sure to balance them. a. MgCl2 + Ba(NO3)2 → b. Al2(CrO4)3 + (NH4)2SO4 → c. K2SO4 + SrCl2 → d. FeCl3 + KOH → e. HCl + AgNO3 → f. K2SO4 + Ba(NO3)2 → 7. (Brown 4.21) Will precipitation occur when the following solutions are mixed? If so‚ write a balanced chemical equation for the reaction. a. Na2CO3 and AgNO3
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