Which element is most reactive with water? [A] Ba [B] Li [C] Ga [D] Cs

Q: Rusting steel will form Fe₂O3. However, the protective coatings of galvanized iron and stainless…

A: A question based on corrosion that is to be accomplished.

Q: Select the element whose +2 oxidation state is least stable in water. O Ni Co Ov Zn

A: Hydration energy: when one mole of ionic crystal is dissolved in water the water molecules are…

Q: Which oxide, CrO3 or CrO, is more acidic in water? Why?

A: To determine the nature of oxide whether it is acidic or basic, we have a general observation that…

Q: What are the possible reactions for the reaction of Aluminum with HCL and Water ? And what is the…

A: Aluminum reacts with HCl and water.We have to write the possible reactions and identify the…

Q: A blast furnace uses Fe₂O₃ to produce 8400. t of Fe per day.(a) What mass of CO₂ is produced each…

A: a) The chemical reaction that occurs in the blast furnace to produce iron is as follows,

Q: The lanthanide elements reacts with oxygen to give compounds of the type Ln2O3.However,the are…

A: Answer: a. Mass percentage of Tb is 73.945% Mass percentage of O =…

Q: What happens when transition metals are oxidized?

A: What happens when transition metals are oxidized?

Q: Why alkali metals donot exist as free in nature?

A: Alkali metals are s-block elements or 1A group elements.  These metals have only one electron in the…

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: A sample of an industrial waste water is analyzed and found to contain 25.8 ppb Cr2+. How many grams…

A: Parts per billion (ppb) :-  The number of parts of solute present billion (109) parts by weight of…

Q: What is the Csp for copper in cal/g*C

A:

Q: When orange solution containing Cr2O72–ion is treated with an alkali, a yellow solution is formed…

A: Given,Orange solution containing Cr2O72–ion is treated with an alkali, a yellow solution is formed…

Q: In aqueous solution, Co(H₂O) 6²+ is pink, CoCl4²- is blue, and CI- and H₂O are colorless. The…

A:

Q: Solutions of the iron(lll) – containing ionic compounds Fe2(SO4)3 and FeCl3 are yellowish in colour.…

A: In this question, the reason for deep brown color of Fe(MnO4)3 is to be determined while Fe2(SO4)3…

Q: Describe some uses for (a) calcium and its compounds, and (b) magnesium and its compounds.

A: There are many  uses for (a) calcium and its compounds, and (b) magnesium and its compounds.

Q: Bi2O3 is a bsic oxide write a balanced equation for it's reaction with dilute nitric acid

A: balanced equation for B2O3 it's reaction with dilute nitric acid is., Bi2O3 + HNO3 → Bi(NO3)3 + H2O…

Q: An impure magnetite (Fe3O4) sample weighs 0.5023 g. This is converted to Fe2O3 by chemical…

A:

Q: Why KMNO, is stored in amber colored bottles?

A: Amber coloured bottles have an ability to filter UV (ultraviolet) radiation thereby protect the…

Q: 6. A manufacturing company is trying to produce a lightweight but strong cart for use by home…

A: Answer :-  To produce a light weight but strong cart for by use of home gardener manufacturing…

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

A: (a) Aluminum reacts with oxygen to form aluminum oxide. The chemical reaction is shown below:  The…

Q: 3. The oxo-ions of p-block elements are usually aggressive oxidizing agents while thos elements are…

A: We must choose an oxo-ion which matcjes with the charge and valency of phosphate ion, so that it can…

Q: Arrange the following elements in order of decreasing metalic charector O Zn F Al C Sr

A: Metallic character decreases in a period and increases in a group. The given elements are O, Zn, F,…

Q: 7.9 Which of the following oxides are likely to be acidic, basic or amphoteric in aqueous solution:…

A:

Q: what is common oxidation state of lanthanides? and why ?

A: The general electronic configuration of lanthanides is [Xe]4fn5d0-16s2.Lanthanides have incomplete…

Q: Qu) Are The elements sodium, aluminum, and chlorine are in the same period? And give the right…

A: Given: Q11.  Are the elements sodium, aluminium and chlorine are in the same period? a) which has…

Q: When solid CrO3is dissolved in water, the solution is or-ange rather than the yellow of H2CrO4. How…

A:

Q: Consider the production of 100 kg of sodium metal using a current of 50,000 A, assuming a 100%…

A: (a) Given mass of Na metal (w) = 100 kg = 105 g Electric current (I) = 50,000 A Na+ + e- → Na(s)…

Q: Which of the following are main group elements. Choose all that apply. Sb Cu Ca V None of the Above

A: Main group elements are member of s-block and p-block.

Q: (i) Thermal stability of hydrides of group 16 elements decreases downthe group. Why?(ii) Compare the…

A: i) The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O…

Q: Name two metals which occur in nature as oxides.

A: Metals are the elements which lose electrons to acquire a stable electronic configuration. When loss…

Q: Why ZnO appears yellow on heating?

A: The interruption of patterns in the solid crystal leads to the formation of defects.Stoichiometric…

Q: What is the oxidation number of As in: AsO43- AsO33-

A: Calculation of the oxidation number of As in AsO43- ------ Suppose the oxidation number of As = y We…

Q: Elemental C has one of the highest atomization energies on the periodic table at 717 kJ/mol. Explain…

A: Possible reasons for High ionisation energy are larger effective nuclear charge, smaller size and…

Q: Lithium reacts violently with water to form aquoeous lithium hydroxide and hydrogen gas. Do you…

A: When lithium undergoes reaction with water then it forms lithium hydroxide and hydrogen gas The…

Q: One of the alkali metals reacts with oxygen to form a solidwhite substance. When this substance is…

A: When sodium metal reacts with oxygen it forms Sodium peroxide. 2Na(s) + 02(g) --> Na202 (s)

Q: Which of the following statements is incorrect? a. Metals react with oxygen in the air to metal…

A: Identifying the the incorrect statement: a) Metals react with oxygen in the air to metal oxide.…

Q: (a) What is the lanthanide contraction? (b) How does it affectatomic size down a group of transition…

A: Lanthanoid contraction, in chemistry, is the steady decrease in the size of the atoms and ions of…

Q: This process requires 151 kJ for every 1.00 mol of Fe3O4 reduced. How much energy (in kilojoules) is…

A: A balanced chemical equation is the chemical equation in which the number of each type of atom is…

Q: Which set contains an acidic oxide, an amphoteric oxide, and a basic oxide, arranged in that order.…

A: Acidic oxides are oxides that dissolves in water to form acids Basic oxide are oxide that reacts…

Q: Nitrogen is relatively inert as compared to phosphorus. Why?

A: Nitrogen is relatively inert as compared to phosphorus. An explanation of the above statement has to…

Q: Name the following compounds and assign oxidation states to the halogens in them:HIO3.

A: Given: The given compound is HIO3 To find: The name of the compound Oxidation state of iodine in…

Q: Write a balanced equation for the expected reaction betweenpotassium metal and elemental sulfur,…

A: A balanced chemical equation is the equation in which equal number of atoms are present on both the…

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

A: