Describe how sodium dihydrogen phosphate can be used as a pH buffering agent.<

Q: a copper sample of mass 500g and purity 80% reacts with dilute nitric acid. a) Write the chemical…

A: Given that: Total mass of copper = 500g  The purity of copper = 80 % To find: chemical equation…

Q: Why do Selenium and tellurium occur in rare minerals?

A: The reason why Selenium and tellurium occur in rare minerals has to be given,

Q: The hydration reaction involving dicalcium silicate is as follows: 2CaO-SiO2 + 3H2O = 2CaO-SiO2-3H2O…

A: Given : Mass of 2CaO-SiO2-3H2O to be produced = 3000 Kg = 3 X 106 g…

Q: Describe the equilibrium processes involved in the solvent extraction of metal chelates.

A: Answer - Equilibrium process - Chemical equilibrium, condition in the course of a reversible…

Q: Write balanced chemical equations for the following reactions:(a) cadmium burned in air(b) elemental…

A: (a)

Q: Would you expect powdered solid aluminum to act as an oxidizing agent or as a reducing agent?

A: In acidic medium, In basic medium,

Q: What are Ionic hydrides?

A: Ionic hydrides have to be given below.

Q: what are the consequences of lanthanide contraction?

A: Generally, as we move down the periodic table, there is an increase in atomic radii. But in the…

Q: How does the basicity of SnO2 in water compare with that of CO2? Explain.

A: The basicity of SnO2 in water has to be compared with carbon dioxide.

Q: What is the oxidation state of chlorine in the compound KClO3?            (A) -1           (B) +1…

A: Given compound is KCIO3 We know oxidation state of K =+1 Oxidation state of oxygen =-2 Oxidation…

Q: Name the following compounds and assign oxidation states to the halogens in them: Ca1IO322

A: Ca(IO3)2 is called as calcium iodate

Q: Why does aluminum, which has less mass than magnesium, produce approximately the same amount of…

A:

Q: Name the following compounds and assign oxidation states to the halogens in them HClO2

A: Oxidation states of halogens: HClO2,

Q: Write the basic equilibrium equation for PO₄³⁻

A: Bronsted-Lowry acid-base theory: According to the Bronsted-Lowry acid-base theory, acid is a…

Q: The number of reactive specie formed when potassium iodate was reduced to potassium iodide O 2 0 1 0…

A: Potassium iodate is reduced to potassium iodide in presence of sulphite in acidic medium. The…

Q: Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

A: Reducing nature is inversely related to the stability of the hydride of the element. Means on…

Q: What is a product of the reaction between boron tribromide and water? O boric acid O hydrogen gas O…

A:

Q: Describe the lanthanide contraction using basic atomic structure theory  (b) What are its effects on…

A: Lanthanide  contraction  occurs due to poor shielding  effect of 4f orbitals.

Q: What is the chemical formula of silver nitrate? * a. AGNO3 b. Ag(NO3)2 A. c. Ag(NOs)3 d. Ag.NO3 D.…

A:

Q: Give a few examples of non-stoichiometric metal hydrides

A: HYDRIDES may be defined as:- Hydrogen under certain conditions combines with almost all elements,…

Q: Identify the oxidation state for vanadium in [VO(H2O)sl*. O +4 C+2 O +3 C o C+5 C +1

A:

Q: What is the theoretical yield of vanadium, in moles, that can be produced by the reaction of 1.0…

A: Given  Reaction  V2O5(s)  + Ca   →  V    + CaO Number of mole of V2O5  = 1 mole  Number of mole of…

Q: What is the function of manganese(IV) oxide in the thermal decomposition reaction of potassium…

A: When a larger reactant (MN) is broken into the small molecules (M and N) in the presence of heat or…

Q: Which is an industrial reducing agent frequently used to reduce iron from its ore? O Oxygen O…

A: Answer: Iron is found in nature in form of oxide ores. During the reduction process we take off this…

Q: How many Kilograms of Iron can be recovered from  1,400 kilograms of Iron ore  (  Fe2O3 )

A: By using Molar mass of Fe2O3 and Fe we can solve this problem. 979.2kg of iron can be recovered.

Q: Why is the oxidation state of Fe 2.5?

A: Iron is a transition metal. It can exists in more than one oxidation state in the bonded state.

Q: excess

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

Q: Describe the Disproportionation of chlorine with cold and hot alkali.

A: In alkaline medium ,Halogens involve in Disproportionation reaction (except F) In this type of…

Q: Formula of Group IIl sulfides and the color of each

A: To identify: The sulfides of group III sulfides and their colours.

Q: Outline the principles of refining of metals by the following methods :(i) Distillation(ii) Zone…

A: (i) Distillation: Zinc and Mercury have an extremely low boiling point. So on heating them they very…

Q: Treatment of cobalt(II) oxide with oxygen at high temperatures gives Co3O4. Write a balanced…

A: Given that the reaction of cobalt(II) oxide with oxygen gives Co3O4. To find: Balanced chemical…

Q: Selenium is prepared by the reaction of H₂SeO₃ with gaseous SO₂. (a) What redox process does the…

A:

Q: Why is boron limited to a maximum coordination number of four in its compounds?

A: The element Boron belongs to the p-block where the last electron must enter into the p-subshell. The…

Q: Explain why, at room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Give any two examples of amphoteric oxides.

A:

Q: Why is it possible for an active metal like aluminum to be useful as a structural metal?

A: Active metals are those metals which can react actively with all other substance.  The properties of…

Q: Sodium tetraborate decahydrate (Na2​B4​O7​⋅10H2​O ) What is the percentage of boron(B), Sodium(Na),…

A: Percentage composition of elements in compound  can be obtained by  Percent ratio of mass of…

Q: Why are the lanthanoid elements not found in nature in their elemental forms?

A:

Q: Explain how the diphosphate ion, [O3P−O−PO3]4−, can function as a water softener that prevents the…

A: The reason of diphosphate ion as a water softener has to be given,

Q: Suppose 10.00 g of an alkaline earth metal reacts with 10.0 L of water to produce 6.10 L of hydrogen…

A: The reaction of alkaline earth metal, X and water – X + 2H2O →XOH2 + H2

Q: Write the chemical formula for each of the following compounds,and indicate the oxidation state of…

A: To determine chemical formula of compounds and indicate oxidation state of halogen: a). chlorate…

Q: Draw structure of Fe(OX).2H2O

A:

Q: What is the oxidation state of bromine in the compound HBrO3?

A: Oxidation state can be calculated as below : Sum of Oxidation state of each atom  = charge of…

d-Block Elements

According to the modern form of periodic table, 118 elements are present which are subdivided as four blocks, namely, s, p, d and f-block elements based on the entry of the valence electron or last electron into which orbital.