Web2 A student investigated the rate of reaction between magnesium ribbon and solutions of dilute hydrochloric acid of different concentrations, solutions H, I, J and K. The dilute hydrochloric acid was in excess in all experiments. Five experiments were done. Experiment 1 A measuring cylinder was used to pour 30 cm3 of solution H into a beaker. WebA student performed a series of titrations on 1.50 g samples of solid azurite using 0.400 mol dm–3 sulfuric acid. It can be assumed that any other material present in azurite does not react with sulfuric acid. The titration data is given in the table. experiment rough 1 2 inal reading / cm3 25.50 24.05 32.70 initial reading / cm3 0.00 0.15 8.30
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WebAzurite is a secondary mineral that usually forms when carbon-dioxide-laden waters descend into the Earth and react with subsurface copper ores. The carbonic acid of these waters dissolves small amounts of copper from the ore. The dissolved copper is transported with the water until it reaches a new geochemical environment. WebThe reaction with concentrated acids is highly exothermic (releasing heat). The H2 gas that is produced as a result of the reaction might get ignited by the heat, and burn violently. Concentrated acid reactions usually cause explosions, and might lead to someone getting hurt. Also, we have to be really carefulwhile handling the acid. ipass in cloud
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Webdolomite, type of limestone, the carbonate fraction of which is dominated by the mineral dolomite, calcium magnesium carbonate [CaMg(CO3)2]. Along with calcite and aragonite, dolomite makes up approximately 2 percent of the Earth’s crust. The bulk of the dolomite constitutes dolostone formations that occur as thick units of great areal extent in many … WebWhen vinegar comes into contact with copper, a chemical reaction takes place. The reaction can be observed as the copper begins to change color and tarnish, turning a greenish-blue hue. This occurs because vinegar is an acidic solution, made up of acetic acid and water. When it comes into contact with the copper, the acid in the vinegar starts ... WebIf the acid drop effervesces or fizzes on the surface of the rock, the specimen is calcite. If it does not, the specimen is scratched to produce a small amount of powder and test with acid again. If the acid drop fizzes slowly on the powdered mineral, the specimen is dolomite. The difference between these two minerals can be seen in the video. open source green screen software