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11/6/2021· so is found as uncoined metal cost of recovery is low Iron: iron is a more reactive metal than gold and less reactive than aluminium/middle of reactivity series found …

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(a) A preparation of the insoluble salt calcium fluoride is described below. To 15 cm 3 of aqueous calcium chloride, 30 cm 3 of aqueous sodium fluoride is added. The concentration of both solutions is 1.00 mol / dm 3. The mixture is filtered and the

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7/3/2012· Metal and metal salt used Average temperature rise in C Zn + CuSO 4 12.2 X + CuSO 4 8.3 X + ZnSO 4 0.0 Cu + ZnSO 4 0.0 Zn + XSO 4 2.7 Cu + XSO 4 0.0 Use these results to identify the more reactive metal in each of the following pairs. (2)

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A metal higher in the series has greater tendency to provide electrons to the ions of the metal to be precipitated. Displacement of one nonmetal from its salt solution by another nonmetal: A nonmetal higher in the series (towards bottom side), i.e., having high value of reduction potential will displace another nonmetal with lower reduction potential i.e., occupying position above in the

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It follows, therefore, that this outermost electron is more easily lost than it is in sodium, so potassium can be converted to ionic form more readily than sodium. Hence, potassium is more reactive than sodium. atomic size increases and the effective nuclear charge decreases. lost easily as compared to sodium.

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(iv) Explain why experiments of this type cannot be used to find the position of aluminium in the reactivity series. [2] (b) Potassium and calcium are very reactive metals at the top of the series. Because their ions have different charges, K+ and Ca2+ heated. [2]

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Sample case study question c Explain why some people think that Australia is not Explain how underpopulation has caused problems in underpopulated. a country or area you have studied. 15 TOPIC 3 Population structure and control Planning for population change The rapid growth in the world’s population has been called a population explosion.

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IGCSE CHEMISTRY Test on Metals

4/3/2020· IGCSE CHEMISTRY Test on Metals. Q.1 Zinc and copper are elements next to each other in the Periodic Table. (a) Zinc is obtained from zinc blende in a two-step process. Outline how each of these steps are done. step 1. Roasting of zinc blende (in oxygen) 2ZnS + 3O2 → 2ZnO + 2SO2. step 2. Reaction with coke.

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