1. (i) What is a molar solution? (ii) Calculate the mass of Na S0,5l20 needed to prepare 250 cm' of a 0.011 M solution in a volumetric flask. (RMM - 248)

Q: 4. When the compound represented by the structural formula is warıned with aqueous solution of…

A: Ester hydrolysis reaction: In the ester hydrolysis reaction, the ester is converted into carboxylic…

Q: The number of moles of (CO:) gas present in 44.8 cm' at standard temperature and pressure (STP)…

A: Molar volume of a gas is the volume covered by 1 mol of it. Number of moles =volume of gasmolar…

Q: 19. Two pure liquids. S and T. which form an ideal mixture. have vapour pressures 12.9 kPa and 26.8…

A: The vapour pressure of the mixture of the two pure liquids can be calculated using Raoult's law. It…

Q: Select the compound that has the lowest boiling point. A CH)(CH2),CH;OH B CH,CH2CH(CH;)CH;OH C…

A: The temperature at which the pressure exerted by the surrounding atmosphere is equal to the pressure…

Q: MeetLeam (b) The organic compound P, named , 2-hyd roxylpropanenitrile exhibits isomerism, (i) Draw…

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

Q: 6. (a) An organic compound S reacted with ozone (ozonolysis) to give compounds Q and R. Both Q and R…

A: S is alkene to give carbonyl compound after ozonolysis. So Q and R are carbonyl compound

Q: In which of the following complex ions is the 13. ligand bidentate? A (Cu EDTA]?- B (Co(C20.)} C…

A: Interpretation -  To tell about in which of following complex ion ligand is a bidentate ligand -…

Q: Propanamide (CH,CH; CONH;) could be prepared by reacting ammonia with CH,CH,COCH, B A B reacting…

A: Amides can be prepared by reaction of esters or acid chlorides with ammonia.  Ester +  NH3…

Q: Calculate the pH of a buffer solution that is made by mixing equal volumes of 0.1 mol dm sodium…

A: The pH of the buffer solution has to be given,

Q: Which of the following pairs of oxides will react with both dilute acid and alkali to form salts? A…

A: We know that Oxides that have amphoteric nature react with both acids and bases.

Q: (iv) Arrange the hydroxides of Group II elements (Be to Ba) in decreasing order of solubility…

A: (iv) The decreasing order trend of solubility of group II hydroxides in water is written as follows;…

Q: C2HSOH (y+302- 2C0:(8)+ 3H;0 AHU = -1370 C2H4 (g) + 302 ( 2CO2 (g) + 2H2O) AH" - -1415.6 Determine…

A:

Q: (c) Carbon, silicon, germanium, tin and lead are elements of Group IV ( 14) of the Periodic Table,…

A: 1. Carbon forms large network covalent structures in its two allotropes: diamond and graphite.…

Q: 14. lodoethanoic acid ionizes as follows CH;ICO,H CH;ICO, + H' The concentration of the hydrogen…

A: Since the given acid is a weak acid, the concentration of hydrogen ion can be expressed as: H+ =…

Q: The mass spectrum of a vaporized sample of potassium is given below. Use the information on he…

A: formula used average atomic mass =total relative atomic mass respect to intensity of given different…

Q: (ii) Phenolphthalein indicator represented by HIn, is a weak acid that dissociates in water as…

A: HIn(aq) ⇌ H+(aq) + In-(aq)  Colourless                 Red colour

Q: 41. The graph of boiling point against hydrides of Group 14.15.16, !7 (Group IV. V. VI. VII) reveals…

A: Boling  point  direct  proportional  to surface  area and  intermolecular  force  of interactions.

Q: (c) Give the reagents and observations to distinguish the following pairs of compounds: (i)…

A: Organic reaction mechanisms:

Q: (b) Give the reagents and reaction conditions necessary for the following conversions (i)…

A:

Q: (c) Use a chemical equation in each case to illustrate the various types of the following organic…

A: 1.) In an electrophilic substitution reaction, a pair of π-bonded electrons first attacks an…

Q: II. Barium hydroxide, Ba(OH), of mass 8.55 g was dissolved in water and imade up to I dm' of…

A: Here we need to find the concentration of OH-  in the aqueous solution. 1 dm3 = 1 L = 1000 mL

Q: (i) Explain why hydrogen bromide and hydrogen iodide cannot be prepared conveniently by reacting…

A: Both hydrogen bromide (HBr) and hydrogen iodide (HI) are strong reducing agents. On the other hand,…

Q: 23. One property of a buffer solution, prepared trom a weak acid and its sodium salt is that A its…

A: Acid Buffer Is a combination of weak acid and its conjugate base (salt) weak acid 》Has pH always…

Q: Some species which have five unpairec clcetrons in the 3d subshell include I A manganese atom 2 An…

A: The question is based on the concept of electronic configuration . We have to identify the atoms or…

Q: (b) Calculate the percentage yield when 2.30 g of ethanol rencts completely with excess ethanoic…

A: Given that, 2.30 g of ethanol reacts completely with excess ethanoic acid to produce 3.52 g of ethyl…

Q: Identify the conjugate acids in the following acids-base equilibrium (Fe(H;O)«]*(aq) + H20(1) =…

A: An acid is defined as the substance or a species that can donate protons in a solution whereas a…

Q: In an experiment to determine the relative molecular mass of ethanoic acid in an organic solvent,…

A: The molecular mass of ethanoic acid is determined at different temperatures. The mass of the…

Q: 22. A sample of oxygen gas contains "O and "O. The peaks in the mass spectrum of the oxygen sample…

A: Sample contains two isotopes of O: 16O and 18O. Thus there will a signal at 16O and 18O in case of…

Q: 32. A possible isomer of buta-1,3-diene (1.3-butadiene). CH;=CII-CH-CH2 is A cyclobutane B butene C…

A: Answer -c) butyne  Isomer - They have same molecular formula but different structure formula is…

Q: 6. Diamonds are measured in carats, and 1 carat = 0.200 g. The density of diamond is 3.57 g/cm³.…

A: To answer: Diamonds are measured in carats, and 1 carat = 0.200 g. The density of diamond is 3.57g /…

Q: (a) The Group VII elements of the Periodic Table are called Halogens. ) List these elements in order…

A: Halogens:

Q: show-all-working-explaining-detailly-each-step Answer should be typewritten using a computer…

A: For a volatile organic compound  Mass is given that is 0.15g Pressure= 753mm of Hg,converted into…

Q: Which of the following compounds would react with acidified potassium dichromate solution on…

A: Acidified potassium dichromate(VI) works as an oxidizing agent. It oxidizes: Primary alcohols…

Q: (d) The elements of Group I and II elements of the Periodic Table are called S-block elements, (i)…

A: The elements of Group 1 and Group 2 of the modern periodic table are called S block elements. The…

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.