the metal that produces the most hydrogen gas is considered the most reactive‚ in this experiment magnesium was most reactive. And‚ similarly‚ if the metal that produces the least hydrogen gas is considered the least reactive‚ in this experiment copper was the least reactive. While this does follow the trend of the Reactivity series roughly‚ it is not exact. As seen in the graph‚ the 2nd most reactive metal was calcium‚ as it produced on average 58.17mL of hydrogen gas (the 2nd largest volume of gas)
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Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:
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IGCSE Complete Chemistry Notes Unit 1: States of matter Everything is made of particles. Particles in solid are not free to move around. Liquids and gases can. As particles move they collide with each other and bounce off in all directions. This is called random motion. In 2 substances‚ when mixed‚ particles bounce off in all directions when they collide. This mixing process is called diffusion. It’s also the movement of particles without a force. The smallest particle
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years ago‚ its surface was molten. As it cooled‚ volcanoes were formed. These volcanoes released various gases. Around 4600 million years ago the Earth’s atmosphere was made up of Carbon Dioxide‚ Water Vapour‚ Nitrogen‚ Ammonia‚ Hydrogen Chloride‚ Sulphur Dioxide‚ Hydrogen and the Noble gasses. There was no oxygen at this time. Oxygen only appeared in the atmosphere around 3500 million years ago when the first simple organisms began releasing it. Most of the Earth’s atmosphere (78.08%) now is made
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3BrC6H5OH + FeCl3 Fe(BrC6H4O) 3 + 3HCl β-Naphthol 3C10H7OH + FeCl3 Fe(C10H7O)3 + 3HCl 2.) Explain why Lucas test is applicable only to alcohols containing 5 or less carbons The Lucas reagent is an aqueous solution of strong acid (HCl) and zinc chloride. The alcohol starting material must be sufficiently soluble in aqueous environments for the reaction to take place. Having more than 5 carbons would decrease the compound’s solubility. Only water-soluble alcohols with low molecular weight can be
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ELECTROPHILIC ADDITION PURPOSE The purpose of this lab is to learn how to synthesize 2-methyl-2-butene into 2-bromo-2-methylbutane using addition of hydrogen bromide. THEORY Chemical Compound Molecular Formula Molecular Weight Boiling Point Melting Point Density Amylene CH3CH=C(CH3)2 70.13 g/mol 36 oC -134 oC 0.662 g/ml Hydrobromic Acid HBr 80.91 g/mol 126 oC -11 oC 1.490 g/ml 2-Bromo-2-MethylButane C5H11Br 151.05 g/mol 107 oC 1.18 g/ml Sodium bicarbonate NaHCO3 84.007 g/mol Decomposes
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Purpose: The purpose of the lab was to investigate and demonstrate hydrogen bonding and London dispersion bonding in water and rubbing alcohol. Hypothesis: I believe water will have the greater surface tension because rubbing alcohol’s density is lower than water’s. Materials: * Water * Isopropyl alcohol (rubbing alcohol) * Pennies * Paper clips * Flasks * Cups or jars * Wax paper * Eyedropper Procedures: Part 1: Surface tension and vortex: * Fill
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weakens the carbon-oxygen bond. The carbon-oxygen bond breaks during heating giving water an unstable carbocation. Without a nucleophile‚ the carbocation intermediate loses a proton from a carbon and forms a carbon-carbon double bond from the carbon-hydrogen electrons. The
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bDATES PERFORMED: JANUARY 8‚ 2013 CHEMICAL EQUILIBRIUM D.M. TAN1 AND P.B. ALEGRO2 1DEPARTMENT OF MINING‚ METALLURGICAL‚ AND MATERIALS ENGINEERING‚ COLLEGE OF ENGINEERING 2 INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED JANUARY 15‚ 2013 RESULTS AND DISCUSSION A. Iron- Silver Equilibrium The first part of the experimentation focuses in the iron-silver system. Silver nitrate (AgNO3) was added to ferrous
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February‚ 2011 Due Date: 9th February‚ 2011 Title: Analysis of the Elements present in Organic Compounds Aims: To test the presence of Carbon‚ Hydrogen‚ Oxygen‚ Nitrogen and Sulfur in Organic Compounds Introduction: Organic Compounds can be considered as any compound containing carbon atoms covalently bonded with other atoms‚ usually hydrogen. Other atoms may include oxygen‚ nitrogen‚ sulfur…etc. They can be found in nature‚ since “organic” means present in‚ or derived from‚ plants and animals
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