Why does a salt compound give off light/a colored flame when burned?

Q: How can a mixture of benzoic acid and sodium be separated, given that sodium explodes strongly when…

A: Answer is as Follows :

Q: Why we add CaCl2 for the production of Na metal from its molten chloride?

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

Q: A basic solution turns blue litmus paper to red.

A: FALSE  BASIC SOLTIONS TURNS RED LITMUS TO BLUE SOLUTION RED LITMUS BLUE LITMUS BASIC TURNS BLUE…

Q: Why alkalis like sodium hydroxide and potassium hydroxide should not be leftexposed to air?

A: Alkalis like sodium hydroxide and potassium hydroxide should not be exposed to air because both of…

Q: Why use ammonium carbonate to precipitate the fifth group

A: In the periodic table, the Group 5 elements are vanadium (V), niobium (Nb), tantalum (Ta) and…

Q: Why first ionisation enthalpy of Cr is lower than that of Zn ?

A: Why first ionisation enthalpy of Cr is lower than that of Zn is to be explained.

Q: Explain (with the aid of one or more equations) why a sodium ISE is more sensitive than a calcium…

A: Ion selective electrode (ISE) is used to identify the activity of ions in aqueous solution by…

Q: NaF and CaO.Which has the higher melting point and why?

A: The compound which has  the higher melting point has to be given,

Q: Explain why solutions of Ca2+ and Mg2+ in the presence of carbonate leave deposits (from the…

A: Solutions of Ca2+ and Mg2+ leave deposits i.e. forms precipitate in presence of carbonate ions while…

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: Why can co-ordinate bonds be formed between transition metal ions and water molecules

A: Answer

Q: colour of the CuCl remain the same if you leave it to dry in the atmosphere ?

A: The Copper (II) Chloride made will dry out in the air and form green crystals. After a while days,…

Q: Write a short note on biologicalrelevanceof sodiumand calcium

A: The biological relevance of SODIUM: Sodium is found mainly in blood plasma and in the fluid that…

Q: Why is nitric acid added to sodium extract before adding silver nitrate for testing halogens?

A: In halogen test, small amount of nitric acid is added to sodium extract ( lassaigne's extract)…

Q: The less electropositive element is: A. Na B. Be C. Li D. Mg

A:

Q: why is a blue-colored solution blue?

A: Solution is made up of two components: absolute and solvent. The component which is present in major…

Q: State reasons for the following :(i) Cu (I) ion is not stable in an aqueous solution.(ii) Unlike…

A: Co-ordination compounds are formed when the metal ion is bonded to the ligand which donates its…

Q: 11. What is the colour observed in a flame test to indicate the presence of copper(IlI) ions in a…

A: In flame test colour is observed due excitation of the electrons from ground electronic level to the…

Q: 11. The best solvent for dissolving potassium ions presents in silica sand sample is: Water Organic…

A: The best solvent for dissolving potassium ions in silica sand is

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: Identify each as a solution (S) or not (N): ___ tungsten alloy          ___ dusty air…

A: Solution It is a mixture of two or more components.

Q: Briefly explain how AAS can quantify the amount of lead in sample solution?

A: Atomic Absorption Spectrometry (AAS) is a technique for measuring quantities of chemical elements…

Q: (9. Assuming complete ionization of the magnesium citrate, the i value is

A:

Q: 2. Water has a dielectric constant of 80. How does this explain why most salts dissolve in water?

A:

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: Explain the group point, color and magnetic properties before and after oxygen binding.

A: The porphyrin ring with Fe2+ at the center has a darker red colour colour , when O2 is not bounded…

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: Explain the Shielding and Deshielding Effects ?

A: When the hydrogen atom is surrounded by higher electron density it creates greater opposition to…

Q: 3. What colors does Chrome yellow absorb? 4. What is the color of a mixture of Chrome yellow and…

A: Questions: 1) Why calcium carbonate mixed with Prussian blue but not wit Chrome yellow? 2) Colors…

Q: Why can’t the ∆H for the reaction of Mg with water be measured directly?

A:

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

A: The color of the copper sulfate solution is blue. But when an iron nail is dropped into the solution…

Q: 1. In what form must iron exist in order to be measured by the phenanthroline method? 2. List some…

A: Iron +II is reacted with o-phenanthroline to form a coloured complex ion. The intensity of the…

Q: Explain the following observations: HI cannot be prepared by treating NaI with sulfuric acid.

A: The given statement is " HI cannot be prepared by treating Na! with sulfuric acid".

Q: 2. What test could you perform to detect the presence of NH4* ion? Write a reaction and explain what…

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next…

Q: (a) What is a coordinate covalent bond?(b) Is it involved when FeCl3 dissolves in water? Explain.(c)…

A: (a) According to valence bond theory, complex ions have coordinate covalent bonds between ligands…

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: If we had potassium vapor lamps, what color would they be?

A: The potassium vapor lamp produces bright  fluorescence.

Q: State with reasons the type of bonding that occurs in Common salt NaCl

A: There is an Ionic Bond between Na and Cl atoms in NaCl.

Q: 2. Why is the sulfide and the ferricyanide ions must not be mixed?

A: Interpretation - To explain sulfide and the ferricyanide ions must not be mixed.

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.

Q: Question 10 In clays, the negative charge is exactly balanced by the absorbed cations. (A) True B)…

A: Actually clays are composed of silica ,alumina or magnesia and water. Silica have negative charge…