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New Simplified Chemistry Class 10 ICSE Solutions

Sodium sulphite reacts with dil sulphuric acid to liberate foul smelling hydrogen sulphide gas Question 2 State your observation When moist starch iodide paper is introduced into chlorine gas Answer The starch iodide paper turns blue due to the liberation ofGet price

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Pickling of Hot Rolled Strip of Carbon Steel in Pickling

Mixtures of HCl and H2SO4 acids have also been used in batch pickling often by adding rock salt (NaCl) to a H2SO4 acid pickling bath Such practices are expected to give the bright pickled steel surface characteristics associated with HCl acid and to increase pickling rates but not without some drawbacks Get price

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Sodium hydroxide and reactions with it

Sodi um hy drox ide dis solved in wa ter has a strong al ka line medi um Al ka lis in so lu tions are de ter mined by spe cial in di ca tors for ex am ple lit mus pa per will turn bright blue Here you'll find an im pres sive ex per i ment with sodi um hy drox ide In the in ter ac tion of sodi um hy drox ide with acids a neu tral iza tion re ac tion takes place Get price

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When does phenolphthalein turn pink?

H2SO4 is added to a large beaker of water How is the solution different from the original water? a The solution turns blue litmus to red b The solution turns phenolphthalein pink c The solution has fewer hydrogen ions d The solution has more hydroxide ions Get price

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why does h2so4 turn blue when it reacts with cuo

Why does the sulphuric acid turn blue when copper ore is Jun 15 2019 It must however be used absolutely cold because ketones react with it very slowly to give the same color If you heat it obviously the change is faster - and potentially confusing While youGet price

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Chemical Reactions and Equations Class 10 Extra

So the solution will turn blue due to the formation of copper nitrate Question 12 An aqueous solution of metal nitrate P reacts with sodium bromide solution to form yellow ppt of compound Q which is used in photography Q on exposure to sunlight undergoesGet price

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Copper Lab

4) When the CuO was washed the ions that were removed were the excess hydroxide ions They could have remained after all of the copper reacted from the reaction before it 5) After adding the sulfuric acid (H2SO4) to the beaker the copper ended up with a copper ion with a 2+ charge Get price

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Mandatory Experiment 11

Why are iodine solutions made up using potassium iodide solution? Iodine is sparingly soluble in water However it reacts with iodide forming I3- ions which are very soluble In this way the iodine is kept in solution Why does starch solution have to be freshlyGet price

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Sodium nitrite dissolving in concentrated H2SO4

2006/10/22When you add solid NaNO2 to an acid at room temperature like dilute H2SO4 HCl or HNO3 then the stuff heavily bubbles and you get a big brown plume of NO2 This is well known NO2(-) + H(+) --- HNO2 2HNO2 --- H2O + NO + NO2 If I however add NaNO2 toGet price

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PARtH EDUCATIONAL SUPPORT SSttuuddyy MMaatteerriiaall

for a long time When reacted with dil H2SO4 it forms a blue colored solution along with brisk effervescence due to colourless odourless gas Z X decomposes to form black colored oxide Y of a reddish brown metal along with gas Z Identify X Y Z 6 AGet price

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SULFURIC ACID (H2SO4)

Dilute solutions of sulfuric acid show all the behavior characteristics of acids It turns blue litmus red It conducts electricity neutralizes alkalies corrodes active many metals releasing hydrogen gas and forming the sulfates It reacts with most hydroxides andGet price

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Question Bank Practical Chemistry

blue solution B but does not give off any gas The solution B on treating with ammonium hydroxide solution forms bluish-white precipitate C The precipitate C dissolves in excess of ammonium hydroxide solution to form deep-blue colouration Identify solid A C Get price

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NCERT Solutions for Class 10 Science Chapter 2 Acids

NCERT Solutions For Class 10 Science Chapter 2 Acids And Bases In this article we will provide you with NCERT Solutions For Class 10 Science Chapter 2 Acids And Bases Having proper knowledge of the theories sufficient practice of the reactions equations and formulas and solving questions from the NCERT Chemistry books are very important if you want to score well in Science for Class 10 Get price

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Does Iron React With Hydrochloric Acid?

2020/4/7Iron reacts with hydrochloric acid to produce dihydrogen and iron(II) chloride When an HCl solution is added to iron powder the H+ and Cl- ions from hydrochloric acid disassociate The Cl- anions form ionic bonds with iron to form FeCl2 The H+ ions pair up andGet price

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Sulfuric Acid Chlorine Bleach Reaction

Chlorine bleach is a solution of sodium hypochlorite and water Chlorine gas is produced when sulfuric acid is mixed with chlorine bleach This reaction is a function of the change in pH of the solution from alkaline to acidic combined with the strong oxidant propertiesGet price

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PARtH EDUCATIONAL SUPPORT SSttuuddyy MMaatteerriiaall

for a long time When reacted with dil H2SO4 it forms a blue colored solution along with brisk effervescence due to colourless odourless gas Z X decomposes to form black colored oxide Y of a reddish brown metal along with gas Z Identify X Y Z 6 AGet price

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Copper Oxide Nanoparticles Induce Oxidative Stress and

CuO significantly decreased cell viability by 60% at the exposure dose of 1 9 log g /cm 2 (80 g/cm 2) The cytotoxic effect of CuO nanoparticles was partially reversed when cells were co-treated with 100 M resveratrol (42% non-viable) suggesting that oxidativeGet price

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KAKAMEGA CENTRAL JOINT EVALUATION TEST

Turn methyl orange to pink (any 3 1mk each) 33 2 Add separate small portion of each to boiling tubes containing hydrogen peroxide MnO2 – effervescence occurs CuO no effervescence // Add separate small portions to H2SO4(aq) CuO blue solution forms MnO2 Colourless solutionGet price

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Pickling of Hot Rolled Strip of Carbon Steel in Pickling

Fig 3 Surfaces of hot rolled steel strip and pickled steel strip Pickling solutions For carbon (C) steel sulphuric (H2SO4) acid is used in most batch pickling operations whereas hydrochloric (HCl) acid has become the pickling agent of choice as of 1994 for Get price

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In a lab we added NH3(aq) to CuSO4(aq) and the

In a lab we added NH3(aq) to CuSO4(aq) and the solution turned dark blue with a precipitate The problem is that the products ( Cu(NH3)4 and SO4) should be soluble no? The question is then what is the percipitate? The ppt is Cu(OH)2 The dark blue solution is Cu(NH3)42+ but if the (OH)- is high enough the hydroxide can (and does) form USUALLY adding an excess of NH3(aq) will dissolve the Get price

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CHEMICAL REACTIONS AND EQUATIONS

2018/8/2chemical reactions and equations chapter notes for cbse students is available in the most simplest way in the largest data base of cbse osbincbse After balancing the above equation can be written as follows 3Fe + 4H2O → Fe3O4 + 4H2 Writing the symbolsGet price

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Questions on HCl and H2SO4 reactions

2006/5/19CuSO4 + 2HCl -- CuCl2 + H2SO4 Although I found it unlikely that it would form sulphuric acid I could not find another spot to put the SO4 which I know cannot exist as a free compound The second puzzlement in my going-ons was that sulphuric acid usually reacts with metal carbonates to form sulphates am I not correct?Get price

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Chemical Reactions And Equations

2 What does the symbol (g) used with water indicate? 3 How can we prevent fried food from turning 'Rancid'? 4 Why does lime water turn milky when CO 2 is passed into it? 5 Which gas is evolved when lead nitrate is heated? 6 During electrolysis of tube?Get price

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Acids Bases Salts

Acids Bases Salts ACID Acid is defined as the substance that releases hydrogen ions in solution These H+ ions are responsible for the properties of acids A characteristic property of acids is the sour taste What is an ACID? pH less than 7 Neutralizes bases + Forms H ions in solution Corrosive-reacts with most metals to form hydrogen gas Good conductors of electricityGet price

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Why do different acids dissolve different things?

When acetic acid reacts with copper you get copper (II) acetate as others have mentioned I'm not sure on what the other product is but a preliminary guess would be hydrogen gas I'm guessing that you get similar results with nitric acid though a quick Google search also suggests that you get NO* 2(gas) which seems like a side product from the reduction of H2 *(gas) Get price

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What Happens When You Put Copper Wire in Silver

You can make your own crystalline structure by putting copper wire in an aqueous solution of silver nitrate Click the link to see what happens! One of the most fascinating chemical experiments is the reaction between silver nitrate and copper wire in water wire in water Get price

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Phenol Preparing Reactions Physical Properties

Phenol does not react with sodium carbonate (Na 2 CO 3) This is used to identify phenol and carboxylic acid because carboxylic acid reacts with sodium carbonate and emit carbon dioxide gas So we can see phenol is less acidic than carboxylic acid not 3) Get price

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What Happens When You Mix Sulfuric Acid and

2020/4/11The chemical equation shows magnesium (Mg) and sulfuric acid (H2SO4) on one side and magnesium sulfate (MgSO4) and hydrogen gas (H2) on the other The solutions involved are colorless If enough magnesium is used magnesium sulfate drops out of solution to form a white salt Get price

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What Happens When You Mix Sulfuric Acid and

2020/4/11The chemical equation shows magnesium (Mg) and sulfuric acid (H2SO4) on one side and magnesium sulfate (MgSO4) and hydrogen gas (H2) on the other The solutions involved are colorless If enough magnesium is used magnesium sulfate drops out of solution Get price

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KAKAMEGA CENTRAL JOINT EVALUATION TEST

Turn methyl orange to pink (any 3 1mk each) 33 2 Add separate small portion of each to boiling tubes containing hydrogen peroxide MnO2 – effervescence occurs CuO no effervescence // Add separate small portions to H2SO4(aq) CuO blue solution forms MnO2 Colourless solutionGet price

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How to Understand how metals react in hydrochloric

In this video tutorial the instructor talks about Hydrochloric acid (HCL) and how it reacts to a few metals To try this out take 30 ml of concentrated hydrochloric acid in a beaker You need to employ caution while handling acids especially if you use strong ones Now you can throw small pieces of different metals into it carefully to see how it reacts with different metals For instance Get price

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Why Does H2so4 Turn Blue When It Reacts With Cuo

Why Does H2so4 Turn Blue When It Reacts With Cuo Chapter 08 tests for functional groups in organic compounds of chemistry lab manual book - aim to identify the functional groups present in an organic compound theory organic compounds containing c c and orGet price

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CBSE Board 2017 Class 10 Science Important Questions

Why a candle flame burns yellow while a highly-oxygenated gas-fuel flame burns blue? Why is the reaction between methane and chlorine considered a substitution reaction? [CBSE 2008] Why does Carbon form compounds mainly by covalent bonding? Give aGet price

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