Explain pharmaceutical and medical applications of interfacial phenomenon. Quote the applications with suitable examples.

Q: The surface tension of water at 20°C is 72.7 mN m and its density is 0.998 g cm" Assuming a contact…

A: Given that, at 20oC The surface tension of water is γ = 72.7 mN/m = 0.0727 N/m = 0.0727 kg/s2. The…

Q: Explain the significance of the triple point?

A: In thermodynamics, a material's triple point is the temperature and pressure at which its three…

Q: Explain why bimolecular condensation is a poor method for making unsymmetricalethers

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Q: For pairs of molecules in the gas phase, average H-bond dissociation energies are 17 kJ/mol for NH3,…

A: Bond dissociation energy is directly proportional to the bond strength. The average H-bond…

Q: is the phase diagram of sulphur. At 95.4˚C, the densities of rhombic and monoclinic sulphur are 2.07…

A: Hello. Since the question contains multiple sub-parts, the first three sub-parts shall only be…

Q: Determine the number of vacancies needed for a BCC iron crystal to have a density of 7.87 g/cm³. The…

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Q: viscosity

A: In this question we have to explain the relate viscosity to strength of IMFs among liquid molecules.

Q: Determine the types/s of intermolecular for systems. 1. K'and H20 2. C6H14 3. C6H14 and H20 4. CH3…

A: Ans -  1. ion-dipole interaction   2. London dispersion forces   3. London dispersion forces   4.…

Q: The reciprocal of conductivity is Turbidity .a O None of the mentioned .b O Viscosity .c O…

A: Answer -  The reciprocal of conductivity is d) Resistivity.

Q: Determine the phase changes carbon dioxide undergoes when its temperature is varied, thus holding…

A: Conversion of kPa to atm:

Q: Briefly describe the significance of anion gap?

A: We have to tell the significance of anion gap.

Q: Construct the phase diagram for benzene near its triple point at 36 Torr and 5.5oC using the…

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Q: (i) Write the type of magnetism observed when the magnetic moments are aligned in parallel and…

A: Magnetism is due to the movement of electric charge.

Q: Give tha explanation with diagram of polaron, bipolaron and soliton pair

A: In an ionic crystal, a conducting electron combines with and itself-induced polarization to form a…

Q: What are the importances of allotropic forms in product formulation?

A: Allotropy, the existence of a chemical element in two or more forms, which may differ in the…

Q: A glass capillary of diameter 0.12 cm is dipped into a liquid. Calculate the level of the liquid in…

A: (a) Water Diameter of tube = 0.12 cm Radius of tube (r) = 0.06 cm = 6.0 * 10-4 m Density of water…

Q: What is the meaning of dichroism?

A: Dichrosim : It is a property of some materials like chiral compounds or crystals to absorb or…

Q: what is lattice parameter for the (200) plane in nm? Given: wavelength is 0.1542 nm; n=1; Do not put…

A: nλ = 2dsinθwhere, n = order of reflectionλ = wavelength of XRDd = interplanar spacingθ = Bragg's…

Q: What is the density of nitrobenzene at 30 degree centigrade and How can you describe the viscosity…

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Q: In how many allotropic forms does arsenic exists?

A: Allotropes of an element are forms of the same element with different physical and chemical…

Q: The melting point of ice decreases as pressure increases. Use the pressure dependence of chemical…

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Q: Saturatad uater vapour at 60c°has iti pressure decrease to ncrease the volume by 10 % Keeping the…

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Q: explain with the aid of sketches how intermolecular interactions develop betwwen a polar molecular…

A: Cl2 is a non polar molecule, so it will have 0 dipole moment whereas Br-Cl possesses a dipole moment…

Q: All compounds in a chemical series have the same commonality of structure, therefore the same…

A: Intermolecular forces are forces of attraction oflr repulsion acting between neighbouring particles.…

Q: Describe the physical origins of linewidths in the absorption and emission spectra of gases. liqu…

A: Spectral line arises from the emission or absorption of light. It is used to identify atoms or…

Q: QI. Calculate the linear density of directions [011] for BCC, and FCC crystal structures?

A: Body centred cubic close packing is represented as BCC whereas face centred cubic close packing is…

Q: An alloy has a composition of 35wt% Pb – 65wt% Sn at 182.999 °C, determine: (1) The amount of the a…

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Q: Vapour pressure is defined as the partial pressure of a gas in equilibrium with liquid. What is the…

A: 1)  We would use Clausius Clapeyron equation to calculate the vapour pressure at 15°C .     Note :…

Q: Estimate the energy of the dispersion interaction (use the London formula) for two Ar atoms…

A: Introduction: London dispersion interaction is the weakest intermolecular interaction. This force…

Q: Derive the minimum value of r(cation)/r(anion) to ensure triangular crystal structure in ceramics.

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Q: The maximum proportion of the avalable volume that can be field with hard sphere identifes a )…

A: In crystallography, some volume of the crystal is filled by the particles (sphere) and some volume…

Q: In-band theory of bonding for solids, what is a bandgap? How does the bandgap differ in metals,…

A: The set of closely discrete energy levels of molecular orbitals is called band. Band that is…

Q: arities and differences between an inter and intramolecular bon

A: Generally, intramolecular forces are stronger than intermolecular forces. Within intermolecular…

Q: explain the difference between the phases undergone by carbon dioxide and as compared to water.

A: Phase diagram predicts the effect on the phase of a substance when temperature and pressure is…

Q: Explain the meaning of third-spacing.

A: The movement of bodily fluid from the blood, into the spaces between the cells. Or  the…

Q: phase diagram for xenon : 57.6 1.00 P atm 0.37 152.0 161.3 165.0 289.7

A: Answer :-  The temperature of the critical point = 289.7…

Q: F S(monoclinic) S(rhombic S(1) c b a f e E D R. S(g) A 95.4 113.0119.3 444.6 Temperature Give the…

A: The phase diagram of Sulphur exhibits the graph for where pressure is at the y-axis and temperature…

Q: AI-Si Eutectic, Calculate the mass fraction of the B phase, silicon, given a sample with 61.8 wt%…

A: Given, At 61.8 wt% aluminium at 576.99 oC. Formula Used Mass fraction = given masstotal mass of…

Q: Calculate the ratio of the thermal conductivities of gaseous hydrogen at 300 K to gaseous hydrogen…

A: Thermal conductivity of hydrogen can be calculated using the formula k = (1.702 x 0.05573 x T)x 10-4…

Q: When temperature is increased by 1°c, the mobility of ions rise by. .... In conductometry solution.…

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

Q: Write applications of Stobbe’s condensation.

A: Stobbe's condensation: In this condensation reaction, the esters react with succinic acid inn…

Q: In-band theory of bonding for solids, what is a bandgap? Howdoes the band gap differ in metals,…

A: Band gap refers to the distance between the valence band and conduction band. It represents the…

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.