hydrochloric acid reacts with zinc metal. Hydrogen gas and sodium chloride are formed when hydrochloric acid reacts with sodium metal. Hydrogen gas and iron chloride are formed when hydrochloric acid reacts with iron. Hydrogen gas and zinc sulphate are formed when zinc metal reacts with sulphuric acid Test for hydrogen gas: The gas evolved after reaction of acid with metal can be tested by bringing a lighted candle near it. If the gas burns with pop sound‚ then it confirms the evolution
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Answer Paper for Science and Technology - II - Paper 4 Time: 2.0 Hrs.------------------------------------------------------------------------------------Max. Marks: 40 Note 1). All questions are compulsory. Note 2). All questions carry equal marks. Note 3). Draw neat and labelled diagrams wherever necessary. Important note from mySSC.in - In this ’Answer paper’‚ questions are displayed for your convenience. In actual exam‚ do not write the questions. Only answers are expected in answer paper
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trusted. Liquid castile soap which is made mainly from olive oil is used as the base of our natural and organic shampoo. Natural shampoo is better than chemical based shampoos because most chemical shampoos contain a product called Sodium Lauryl Sulphate I researched on the internet to see how many people liked Head and shoulders ‚ Pantene and Bed Hair shampoo and most of them said “Head and Shoulders burns my scalp” ‚ “it’s only good for dandruff and nothing else” “The first time I tried Pantene
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will ultimately denature the enzyme‚ thus permanently stopping the enzyme from working (What Factors Affect the Activities of Catalase? n.d). As a result‚ the rate of reaction will also decrease significantly. However‚ the results from the copper II sulphate reaction will not be as dramatic as changing the pH level or increasing salt
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criterion 2.1 Determine the enthalpy change for the reaction (ΔHfθ) between zinc and copper sulphate solution‚ giving full practical details. Aim To determine the enthalpy change for the reaction between zinc and copper sulphate. Zn (s) + CuSO4 (aq) ZnSO4 (aq) + Cu (s) Introduction In the study of energy (thermodynamics) the system refers to the reacting chemicals (zinc and copper sulphate solution) and the surroundings is everything else (atmosphere‚ container‚ temperature
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copper sulphate solution the passage of ions through this solution results in copper atoms being dissolved into the solution from the anode‚ which has a positive charge while positive copper‚ ions (cations) are also being discharged at the cathode which has a negative charge. Normally anions‚ which have a negative charge‚ are discharged at the anode. The experiment I will be carrying out is aimed to observe the amount of Copper (Cu) metal deposited during the electrolysis of Copper Sulphate solution
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LAB 3: QUALITATIVE ANALYSIS Part 2- ANIONS Sameera Feroz Butt Lab Partner: Ram Soni Thursday January 30‚ 2014 Leilani Morales CHEM1131-02 OBJECTIVE The objective of this experiment was to use qualitative analysis to determine the chemical characteristics of four known anions by systemic confirmatory testing. The chemical characteristics observed were to be used to identify an unknown sample. Sulphuric acid was to be added to a carbonate solution and an effervescent reaction would
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will displace copper from copper (II) sulphate solution according to the following equation: CuSO4(aq) + Zn(s) ( Cu(s) + ZnSO4(aq) If an excess of zinc powder is added to 50 cm3 of 1.0 moldm-3 copper(II) sulphate‚ the temperature increases by 6.3 oC. Calculate the enthalpy change for the reaction. 2. Magnesium will also displace copper from copper (II) sulphate solution. If an excess of magnesium is added to 100 cm3 of 1.0 moldm-3 copper(II) sulphate‚ the temperature increases by 46.3
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different levels of Nitrogen(Ammonium sulphate) applied by foliar application method on the yield of mature tea bushes. The mature tea gardens selected for the study were at National Tea Research Institute‚ farmer’s field in Tehsil Oghi (District Mansehra) & Kuza Banda (District Battagram). Basal doses of P and K were applied in the form of Di-Ammonium Phosphate and Sulphate of Potash respectively @ 30 kg acre-1 each while N was applied in the form of Ammonium Sulphate as foliar spray in three split doses
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1. The property of metals by which they can be beaten in to thin sheets is called- a. malleability b. Ductility c. conduction d. Expansion Ans . 1. (a) 2. Which one of the following is metal? a. C b. N c. Na d. O Ans . 2. (c) 3. Which one of the following is non metal? a. Zn b. Al c. Fe d. N Ans . 3. (d) 4. All materials shown property of malleability expect a. Iron b. Graphite c. Aluminium d. Silver Ans . 4. (b) 5. Which one of the following is a good conductor of electricity
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