Nickel and copper ores are generally sulfides, whereasaluminum ore is an oxide. Explain this observation on thebasis of the hard/soft acid/base concept.

Q: Given MnO2, FeCl3, Pt, and Ni, which would you select for decomposing KClO3 to give O2?

A: Catalyst is chemical substance that enhance the rate of chemical reaction but itself remain…

Q: A breathalyzer test is used to detect drunken drivers. The crystals used will change colour, from…

A: A breathalyzer includes a mouthpiece and two liquid-filled chambers linked to a metre that detects a…

Q: For alkaline earth metal carbonates, what is the trend of their thermal stability descending the…

A: Elements that are present in group 2 of the periodic table are categorized as alkaline earth metals.…

Q: When chromite ore FeCr2O4 is fused with NaOH in presence of air, a yellow coloured compound (A) is…

A: Let us break the given sequence of reactions in different steps as: 1. Chromite ore FeCr2O4 is fused…

Q: Account for the following observations: (a) H3PO3 is adiprotic acid. (b) Nitric acid is a strong…

A: A diprotic acid is the acid that can donate two proton for each molecule.

Q: Discuss the following structure of AB2 and ABO3 type oxides in detail with proper diagrams and…

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Q: Which one of the following oxides reacts with bases (alkalis) but does NOT dissolve in water at all?

A: The reactions which are takes place with alkali solution NaOH is

Q: State reasons for the following observations: (i) The enthalpies of atomisation of transition…

A: Transition elements have high effective nuclear charge and a large number of valence electrons.…

Q: (a) Giving examples differentiate between calcination and roasting.(b) What is the role of cryolite…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: Why is beryllium carbonate unusually unstable thermally as compared to the other carbonates of this…

A: Beryllium belongs to group 2 in the periodic table. The carbonates of this group are - BeCO3, MgCO3,…

Q: The prefix eka- comes from the Sanskrit word for “one.”Mendeleev used this prefix to indicate that…

A: Eka-manganese was the name given to the element which is below manganese in the periodic table.

Q: 2. Unlike fluorides, pure oxides with the fluorite structure (MO2) show high anion conduction only…

A: Crystal defect: During crystallization of substances some of the impurities can be seen in…

Q: state the physical and chemical properties of compound LUTEOLIN (as much as it have)

A: Luteolin is a naturally-occurring flavonoid, with potential anti-oxidant, anti-inflammatory,…

Q: Describe the preparation of KMn04 from pyrolusite ore (MnO4). How does the acidified permanganate…

A: The reactions in which one species is oxidized and other species is reduced are known as redox…

Q: Write a short note on the stability of bicarbonates and carbonates of alkali metals

A: As we are moving from Li to Cs from top to bottom of the periodic table thermal stability of…

Q: Senoff was working with ruthenium-based compounds, and upon discovering a brown compound, proposed…

A: The compound that Senoff discovered is a brown color compound. On the other hand, boron monoxide is…

Q: A) What are Oxides. Write the difference between acidic and basic oxides. B) Write the equation for…

A: The question is based on the concept of oxides . we have to explain about acidic,  basic and…

Q: a) : Draw Iron Iron-Carbide diagram and explain its each phase reactions. (b) : Define the following…

A: The carbon in iron is an interstatial impurity. The alloy may form a face centre cubic (FCC) lattice…

Q: Which of the following statements is true regarding the iron-phenanthroline method?

A: Iron- phenanthroline method is a colorimetric method for quantitative analysis of Fe2+. Fe2+, when…

Q: Would the reaction of beryllium, Be, with oxygen be more or less vigorous than ba?

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Q: Several transition metals are prepared by reduction of themetal halide with magnesium. Titanium is…

A: The steps involved in the production of titanium in the kroll's process. In the 1st step…

Q: The only alkali metal that reacts with oxygen to give a compound with the expected stoichiometry is…

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Q: Analyse the progress and assesses Solvay process for the production of sodium carbonate as an…

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Q: Lead is more often found in nature as its sulfide than its oxide. Provide a brief rationale for this…

A: Most of the proportion of lead is found in earth crusting, where it is in the form of sulfide ore.…

Q: Some of the water on earth was formed by the interaction ofiron and silicon oxides and methane.…

A: When chemical substances combine such that their ionic or molecular structures change to generate…

Q: Explain the following observations: (i) The enthalpies of atomisation of transition metals are quite…

A: The given observations have to be explained,

Q: List the acidity strengths of Li+, Fe3+, Na+, Mn2+, Ca2+, Al3+, and Sr2+ ions in order in the…

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Q: Give the oxidation state of the metal for each of the following oxides of the first transition…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Describe the periodic trends in radii and oxidation states of the transition-metal ions, including…

A: Lanthanide contraction occurs due to an increase in the effective nuclear charge with an increasing…

Q: If blast furnace slag is activated by NaOH, resulting in the formation of alkali-activated slag…

A: Blast furnace is used in mainly metallurgical processes.  Here the metals undergo smelting process.…

Q: What is linkage isomerisation and why can it be important?

A: Linkage isomers are two or more coordination compounds in which the donor atom of at least one of…

Q: Many lithium salts are hygroscopic (absorb water), whereas the corresponding salts of the other…

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Q: Give an example of a double salt that can be formed via ligand exchange and give the reactions…

A: Double salts : A double salt is a salts that contains more than one cation and anions which…

Q: Why are fluorides of transition metals more stable in their higher oxidation state as compared to…

A: The stability of the lower vs. higher oxidation state of halides of transition metals depends on the…

Q: (a) What are the different oxidation states exhibited by the lanthanoids? (b) Write two…

A: (a) What are the different oxidation states exhibited by the lanthanoids? In the lanthanide series,…