Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Q: 1. Which of the following is the ratio of magnesium ions to sulfite ions when silver sulfite is in…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Explain why addition of NH3 or HNO3 to a saturated solution of Cu(OH)2 in contact with solid Cu(OH)2…

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Q: What are the oxidation numbers of the elements in the nitrite ion?

A: The formula for nitrite ion is NO2-.

Q: Calculate the equilibrium constant for the reaction between Zn metal and Co2* solution: Zn + Co2+…

A: Given reaction is :  Zn + Co+2 ⇌ Zn+2 + Co  To determine equilibrium constant we need to determine…

Q: Why are almost all metals in nature found as ionic compounds in ores instead of being in the pure…

A: A question about the properties of metals, which is to be accomplished.

Q: What are the structural characteristics of a chelating agent

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Q: Define the term nonzero oxidation states?

A: Oxidation state or oxidation number depicts the charge carried on a chemical atom in order to make…

Q: Titanium (IV) exists in aqueous solution but not as the Ti4+(aq) ion. Suggest the identity of the…

A: Titanium exhibits +2, +3 and +4 oxidation states. It is extracted from an ore which consist of…

Q: d. ClO2→ CIO2 + Cl' in acidic solution

A: We will balance the above reaction by Half reaction method .

Q: Write the equations for the reaction of Group II cations with H2S and give the color of each…

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Q: Preparation for the copper (1)chloride Does the colour of the CuCl remain the same if you leave it…

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Q: What is the redox reaction of hypochlorite if titrated with sodium thiosulfate?

A: Redox reaction: It is a kind of reaction in which one species is oxidized and while the other is…

Q: Would you expect salts of the gold(I) ion, Au+, to be colored? Explain.

A: The presence of a partially filled d orbital is responsible for the coloration in ions because of…

Q: How will you recognize that a single replacement reaction has occured when you comine: (a) an…

A: Single Displacement reaction:    It is also known as exchange reaction. The chemical reaction in…

Q: What species is responsible for the colour change when KSCN(aq)  and  Fe(NO₃)₃(aq) are mixed? Why is…

A: In the given question we have to write Reaction involved between KSCN(aq) and Fe(NO3)3(aq) and…

Q: Write equation for the reaction of: (i) Iron with steam(ii) Calcium and potassium with water

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Q: Iron nail clipped in a solution kept in a test tube. After half an hour it was observed that the…

A: Given solutions,    (a) Zinc sulphate   (b) Copper sulphate   (c) Iron sulphate   (d) Aluminium…

Q: Can you compare the solubility of Co2 in water compared with saturated NaCl solution?

A: solubility of Co2 in NaCl solution is less than in water increases with the temperature and…

Q: Write down the balanced chemical equation of the reaction between ferrous ammonium sulphate and…

A: Interpretation -  To write a balanced chemical equation of the reaction between ferrous ammonium…

Q: Complete and balance the following half-reaction in basic solution Cr(OH):(s) → CrO,? (aq) 12+ 03

A: Balancing of chemical reaction in any medium is must so that law of conservation of mass is…

Q: 6. A mixture contains at least one of the ions in the silver group (Ag*, Hg²*, Pb²*). Read the…

A: The qualitative analysis of the metal ions involves the identification of metal ions that are…

Q: The equilibrium constant for the disproportionation copper(I) shown below is 1.81 x 106. If the…

A: The reaction for the disproportionation of Cu+ is given as;

Q: Define the following terms; Selective Precipitation: Quantitative Analysis: ii) Which metals is…

A: (i) Selective precipitation is defined as the process used for the separation of ions in the…

Q: - How many coulombs required to obtain 54 gm of silver metal from its [Ag* = 108, charge of (e") =…

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Q: Why do Potassium permanganate crystals cause the water to change its colors? And why it (Potassium…

A: In following question explain that'scauses  potassium permaganate crystal water to change its colour…

Q: Why are pennies silver colored after they were immersed in the Zn/NaOH solution?

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Q: excess

A: The chemical symbol for antimony is Sb and chemical formula of sodium nitrate is NaNO3.…

Q: Why does dry HCl gas not change the colour of the dry litmus paper?

A: Colour of the litmus paper is changed by the hydrogen ions. Dry HCl gas does not contain H+ ions.

Q: Why are metals resposbile for the production of colour upon heating

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Q: Which of following metals will NOT react with CuSO4 (aq) solution by replacing Cu2+ ions due to its…

A: The reactivity order of any metal is decided based on the standard reduction potential of the…

Q: What is the chemistry behind why rusting occurs rapidly in moist conditions as compared to a dry…

A: why rusting occurs rapidly in moist conditions as compared to a dry environment? The reason is given…

Q: Why do alkali metals and salts impart color to an oxidizing flame?

A: The group 1 elements are called alkali metals. It includes lithium, sodium, potassium, rubidium,…

Q: Write the balanced net ionic equation for the precipitation of lead (II) hydroxide from aqueous…

A: A net ionic equation is the chemical equation that shows only those ions, elements and compounds…

Q: What happens if a piece of metallic copper is dipped in a solution containing Cr3 + ions?

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Q: Given that sodium oxalate is dissolved in a flask and is titrated to its equivalence point with 30…

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Q: Calculate the copper activity in an aqueous 0.12 M CuCl2 solution.

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Q: What is the role of zinc metal in the extraction of silver?

A: A separation method involving the separation of a material from a matrix is called as extraction…

Q: In iron smelting, what are the possible chemical equations that will involve CaO if CaO is part of…

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Q: What is the oxidation number for Xe in Хе02F2?

A: Oxidation number: The covalent bond between the atoms of different electronegativity is polar. If we…

Q: If a sample of silver coin weighing 0.2500 g gives a ppt of AgCl weighing 0.2991 g. What wt. of Agl…

A: Since moles = mass / molar mass And molar mass of AgCl = Atomic mass of Ag + Atomic mass of Cl = 108…

Q: 4. Why do silver salts dissolve readily in 3 M HNO3? Why is the fresh chlorine water critical to…

A: Soluble silver salts dissolve in H2O if it is either neutral pH or acidic. But, if the water is…

Q: Can you please explain how to calculate the equilbrium concentrations of Fe3+ and NCS-.

A: The volume of solution is given = 10 mL = 0.010 L                                             (since…

Q: Why do Iodine crystals cause carbon tetrachloride solutions to change its colors? And why it (iodine…

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Q: Why was HCl added for the flame test of barium?

A: Interpretation: To explain why HCl was added for the flame test of barium.