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Given that (at T = 298 K)
Cu(s)  Cu^{2+} (1.0 M)  Ag^{+} (1.0 M)  Ag(s) E°_{cell} = 0.46 V
Zn(s)  Zn^{2+} (1.0 M)  Cu^{2+} (1.0 M)  Cu(s) E°_{cell} = 1.10 V
Then, E_{cell} for
Zn  Zn^{2+} (1.0 M)  Ag^{+} (1.0 M)  Ag at 298 K will be
The following adsorption isotherm for a gas at adsorption surface. The correct order of temperature
Which of the following decay with the change in spin multiplicity is known as ISC (Inter System Crossing)?
^{92}U_{238} emits 8α and 6β particles. The n/p ration in daughter nucleus will be?
For a cell reaction, consider the following equations:
A + B ⇌ C + D
2A + 2B ⇌ 2C + 2D
A complex containing K^{+}, Pt(IV) and Cl^{} is 100% ionized giving i = 3. Thus, complex is?
Adding heat to a solid and liquid in equilibrium will cause the:
Calculate the lattice energy of KCl at 298 K. Given that:
Sublimation energy of K(s) = 89 kJ mol^{–1 }
Ionization energy of K(g) = 418 kJ mol^{–1 }
Dissociation energy of Cl_{2}(g) = 244 kJ mol^{–1 }
Electro attachment energy of Cl(g) = –349 kJ mol^{–1}
Formation of KCl(s) = – 437
In Hatom, electrons make transition from 5^{th} excited state to ground state producing all possible type of photons. Calculate the number the lines in infrared region.
The standard emf of the cell, Cd(s)  CdCl_{2}(aq) (0.1 M)  AgCl(s)  Ag(s) in which the cell reaction, is, is 0.6915 V at 0°C and 0.6753 V at 25°C. The DH° of the reaction at 25°C is:
For a equilibrium H_{2}O(s) → H_{2}O(l) which of the following statements is true:
At low pressure if RT = 2(aP)^{1/2}, then, the volume occupied by a real gas is?
The CH stretching frequency of an alkane is 2900 cm^{1}. Calculate the value of CD frequency (cm^{1}):
Given
(i) Zn + 4NH_{3} → Zn(NH_{3})_{4}^{2+} + 2e^{–}, E° = 1.03 V
(ii) Zn → Zn^{2+} + 2e^{–}, E° = 0.763 V
The formation constant of the complex Zn(NH_{3})_{4}^{2+} is approximately
On the basis of data given below predict which of the following gases shows least adsorption on a definite amount of charcoal?
The calomel electrode and quinhydrone electrode are reversible with respect to which ion respectively:
At 30°C the solubility of Ag_{2}CO_{3} (K_{sp} = 8 × 10^{–12}) would be greatest in one litre of:
For an enzyme catalyzed reaction, the reaction rate is half of its maximum value when
The rate constant, the activation energy and Arrhenius parameter of a chemical reaction at 25^{o}C are 3×10^{4} s^{1}, 104.4 kJ/mol and 6.0×10^{14} s^{1} resp.. Calculate the value of rate constant as time →Infinity is?
The degree of dissociation of SO_{3} is α at equilibrium pressure P_{0}.
K_{p} for 2SO_{3}(g) → 2SO_{2}(g) + O_{2}(g) is
Aluminum metal has a density of 2.72g/cm^{3} and crystallizes in lattice with an edge length of 404 pm. Which of the following alternative are correct:
The conductivity of a saturated solution of BaSO_{4} is 3.06 × 10^{–6} ohm^{–1} cm^{–1} and its equivalent conductance is 1.53 ohm^{–1} cm^{2} equiv^{–1}. The K_{sp} for BaSO_{4} will be:
In the following reaction started only with A_{g},
2A_{8}(g) → 2A_{3}(g) + 3A_{2}(g) +A_{4}(g)
mole fraction of A_{2} is found to 0.36 at a total pressure of 100 atm at equilibrium. The mole fraction of A_{8}(g) at equilibrium is:
t_{1/2} (halflife period) of 1^{st} order reaction is 10 min. Starting with 10 mol L^{–1}, rate after 20 min is:
The phase diagram of CO_{2} and Bi differ in the sense that:
When pure water is saturated with CaCO_{3 }and CaC_{2}O_{4}, the concentration of calcium ion in the solution under equilibrium is 8 × 10^{–5} M. If the ratio of the solubility product of CaCO_{3} to that of CaC_{2}O_{4} is 3, what is the solubility product of CaCO_{3} in pure water?
1g charcoal show chemical adsorption of some acetic acid on coming in contact with 100 mL of 0.50 M acetic acid and the molarity of acetic acid is reduced to 0.49 M. If surface area of charcoal is 3.015 × 10^{2} m^{2}/g, the surface area of each chemical adsorbed molecule of acetic acid is:
Emf of Cdcell is 1.018 V at 25°C. The temperature coefficient of cell is –5.2 × 10^{–5} VK^{–1}. How cell temperature will change during operation?
The radial distribution functions [P(r)] is used to determine the most probable radius, which is used to find the electron in a given orbital for 1sorbtial of hydrogen like atom having atomic number Z, is Then which of the following statements is/are correct
KCl can be used in salt bridge as electrolyte in which of the following cells:
A 0.1 M sodium acetate solution was prepared. The K_{h} = 5.6 × 10^{–10}
The enthalpies of two reaction are ∆H_{1} and ∆H_{2} (both positive) with ∆H_{2} > ∆H_{1}. If the temperature of reacting system is increased from T_{1} to T_{2}, predict which of the following alternatives is incorrect?
The figure shows the pV plot of an ideal gas taken through a cycle ABCDA. The part ABC is a semicircle and CDA is half of an ellipse. Then,
2CaSO_{4}(s) → 2CaO(s) 2SO_{2}(g) +O_{2}(g) ΔH > 0
Above equilibrium is established by taking some amount of CaSO_{4}(s) in a closed container at 1600 K. Then which of the following may be correct option.
The pH of solution in a cell: Reference electrode  H_{3}O^{+}(?) H_{2} Pt can be determined by using the formula However, the use of hydrogen electrode to determine pH is usually ignored. While are the correct facts about this observation?
A plant virus is found to consist of uniform cylindrical particles of 150 angstrom in diameter and 5000 angstrom long. The specific volume of the virus is 0.75 cm^{3}/g. If the virus is considered to be a single particle, find its molar mass (in g/mol, rounded up to three decimal places, in the multiple of 10^{7}):
Wavelength of high energy transition of Hatom is 91.2 nm. Calculate the corresponding wavelength of He^{+} ion: (in nm, rounded up to one decimal place)
Find the pH of solution forming standard hydrogen electrode:
For a given gas Critical temperature (T_{c}) was found to be 40 K. Hence, T_{i} would be?
A millimolar solution of acetic acid demerises to the extent of 60% in benzene at 27°C. Calculate the osmotic pressure (atm) of acetic acid in benzene [rounded up to two decimal places, in the multiple of 10^{3}]
The edge length of a face centred cubic cell of an ionic substance is 508 pm. If the radius of cation is 110 pm, calculate the radius of anion (pm)?
When limestone is heated CaO is formed, as → For this reaction equilibrium constant (K_{P}) follow the relation.
Calculate the temperature ‘T’ (in K, rounded up to first decimal place) at which reaction comes to completion?
What is [H^{+}] in a solution obtained when 0.1 M ammonia is just neutralized by a strong HCl?Given: (Kb = 1.8 × 10^{–5}) [In the multiple of 10^{6}, up to two decimal places]:
How many vibrational modes are there in the nonlinear C_{60} molecule?
The ionic strength of a solution containing 0.008 M AlCl_{3} and 0.005 M KCl is:
(rounded up to two decimal places)
The spacing between rotational line of HF is 40 cm^{–1}. Spacing between rotational lines of DF would be ______________? (rounded up to first decimal place)
What volume (in ml, rounded up to first decimal place) of 0.10 M sodium formate solution should be added to 50 ml of 0.05 M formic acid to produce a buffer solution of pH 4. [pK_{a} for formic acid is 3.7]
By Xray diffraction methods, the unit length of NaCl is observed to be 0.5627 nm. The density of NaCl is found to be 2.164 g cm^{–3}. The percentage of Na^{+} and Cl^{–} ions missing is ____________%: (rounded up to 2 decimal place)
The chemisorption of H_{2} on an activated surface becomes 40% faster if temperature is raised from 500 K to 1000 K. Calculate the activation energy of chemisorptions (in KJ/mol). (rounded up to first decimal place)
Calculate how long (in seconds, in the multiple of 10^{12}, rounded up to first decimal place) a hydrogen atom will remain on the surface of a solid at 298 K if its desorption activation energy is 150 kJ mol^{–1} Assume that
If energy of a state in 2Dbox is 17h^{2}/8ml^{2}, degeneracy would be?
Not considering the electronic spin, the degeneracy of the second excited state (n = 3) of H atom is 9, while the degeneracy of the second excited state of H^{–} is:
Equilibrium population of a doubly degenerate level lying at energy 2 unit above than the lowest energy level (assume K_{B}T = 1) obtained in microwave region will be____? (up to two decimal place)
2 docs25 tests

2 docs25 tests
