Katerina Baeza Hernandez | | | | | | | |Zn |Mg |Cu |Pb | | |(+) clear liquid but the |(+) a black spot appeared on|(-) no reaction occurred |(-) no reaction | |Pb(NO3)2
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chloride by the Mohr Method Objective: To determine chloride by using Mohr Method. Introduction: The Mohr method is the method used to determine the chloride ion concentration of a solution by titration with silver nitrate. As the silver nitrate solution is slowly added‚ a precipitate of silver chloride forms. Ag+ + Cl- AgCl(s) (Ksp for AgCl is 1.810-10) The chloride ion (Cl-) is an important anion found in solids and solutions. Chloride is the predominant anion of sea water with a molarity
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Hansa traded with Swahili cities along the coast of East Africa. Swahili cities had attracted many cultures looking for spices‚ gold‚ and other goods. Both Hansa and Swahili dominated in trade. The most valuable items to trade were gold‚ silver‚ and spices. (Doc 1) Coins discovered in Swahili Cities. This document shows the coins found from the classical era up until 1450 C.E in Swahili cities. Most of the coins were found in Sung china‚ a total of 212 coins were found. The least amount
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Extracting sliver from used X-ray films using new techniques SUMMARY Silver is one of the precious metals that exists as silver halides and dark silver in X-ray films therefore recycling it is essential. I decided to carry out my research in the field of extracting silver from used X-ray films using new technique that dose not deplete ant metallic resources or energy resources meaning that the project must be environmentally friendly. My research consists of two parts‚ part one which is carrying
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Gold and Silver in Singapore- Store Your Metals Offshore for Protection Storing your gold and silver in a safety vault may be handy and convenient‚ but as capital control is increasing every day‚ you may want to consider buying and storing your gold and silver abroad‚ for unrestricted transfer and selling in the future. Offshore gold storage prevents gold confiscation and keeps your gold’s selling price stable and as high as it can be. Storing gold in a safe‚ stable jurisdiction out of your home
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coinage so was new. Coins were prestigious only for their weight in silver or gold‚ and circled close varied differing kinds of valuable metal. this is often what’s called a bullion economy‚ within which the burden and also the cleanness of the precious metal square measure what’s essential‚ not what form the metal takes. By a good margin the foremost well-known metal within the economy was silver‚ albeit gold was likewise utilised. Silver circled as bars‚ or ingots‚ and in addition as adornments and trimmings
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the element Silver (Ag) which was first mixed with chloride (Cl). Together the two mixtures created a very white‚ milky type which is known by the name of Silver Chloride (AgCl). Iodine (I) was then mixed with silver to create a yellowish‚ whitish color which is normally called Silver Iodine (AgI). The mixture followed is Silver Oxide (Ag2O) which happens to contain hydroxide (OH) as well a silver. This compound ended up turning a very grey-brown like color as well as being gritty. Silver carbonate
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reaction occurs. 2. Ethanolic Silver Nitrate Solution. Label eleven small containers and place 0.1 mL or 100 mg of each of the following halides in the tubes: 1-chlorobutane‚ 2-chlorobutane‚ 2-chloro-2-methylpropane‚ 1-bromobutane‚ 2-bromobutane‚ 2-chloro-2butene‚ Iodoethane‚ 1-Chloroadamantane‚ Bromobenzene‚ 1-chloro-2-butene‚ 1-chloro-2-methylpropane. To each tube rapidly add 1mL of an 18% solution of sodium iodide in acetone. Repeat the procedure with 1% ethanolic silver nitrate solution. Data/Results:
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table‚ between groups 2 and 3. They are generally hard and dense‚ and less reactive than the alkali metals. Iron‚ copper‚ silver and gold are important transition metals. The transition metals: overview The elements in the centre of the periodic table‚ between groups 2 and 3‚ are called the transition metals. Most of the commonly used metals are there‚ including iron‚ copper‚ silver and gold The transition metals Common properties The transition metals have the following properties in common: they
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solubility differences of two anions and the titration endpoint of a precipitate. The net ionic reaction during the titration is as follows: Ag+ + Cl- → AgCl(s) The Ksp for AgCl is 1.8 x 10-10 and that for Ag2CrO4 is 1.2 x 10-12. Thus‚ as silver ions are slowly added to solution‚ AgCl precipitates first‚ removing the chloride ions from solution. As can be inferred‚ Ag+ ions react with almost all chloride ions before precipitation of Ag2CrO4 begins. Thus‚ the secondary reaction is
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