Recently Active Physical Chemistry Questions

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a set of orbitals is called degenrate if they have same wave functions....true /false? ...

Molar heat capacity of water in equilibrium with ice at constant pressure is (A) zero (B) infinity (C) 40.45 kJ K-1 mol-1 (D) 75.48 kJ K-1 mol-1 ...

The following is/are endothermic reaction(s) : (A) Combustion of methane (B) Decomposition of water (C) Dehydrogenation of ethane to ethylene (D) Conversion of graphite to diamond. ...

RCM (28) A heat pump is used to draw water from a well.The temperature of the water is 15°C and that of the atmosphere is 40°C.If the amount of water drawn is 10kg through a depth of 12m, calculate the amount of heat suppli ...

Q1 if tehre were three possible values (-1/2,0,1/2) for spin quantum number s,then the number of elements in fourth preiod of periodic table would be ? Q2 what indiactor is uded fr titration of 0,1 M KH2BO3 and 0.1M HCl ? (an ...

1)Calculate the value of Avogadro constant from the internuclear distance of adjacent ion in NaCl is 0.282 nm and the density of soild NaCl formula units is 2.17 × 103 kg/m3 2) From the following standard electrode potential ...

State whether the order of a chemical reaction can be negetive or not.-Explain . Cite an example . ...

Q1. What weight of KNO2 will be oxidised by 20ml of 0.2M KMnO4 in acidic medium? Q2. 7.45 g KCl was heated with excess MnO2 and H2SO4. The gas so produced was then passed through a solution of KI. Wt, of I2 liberated is _____ ...

Q1) Which has highest bp? a) 1% soln C6H12O6 b) 1% soln NaCl c) 1% soln ZnSO4 d) 1% soln (NH2)2CO Q2) Weight of water in 1L of 2M NaCl soln of density 1.117g/ml is a) 1117g b) 1000g c) 117g d) 883g ...

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*Image* Is the ans a or d ...

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In order to get maximum calorific output,a burner should have an optimum fuel to oxygen ratio which corresponds to 3 times as much oxygen as is required theoretically for complete combustion of the fuel.A burner which has bee ...

1)A:PbS can be separated from ZnS be electrosatic separation method R:PbS is a good conductor and ZnS is a poor conductor of electricity 2)A: Addtion of solvent(volatile) to solute(non volatile) always lowers Vapor presure R: ...

A)Na p)CCP B)Cu q)BCC C)Au r)12 D)K s)8 i thought we have to learn data only for NaCl...so whats all this ????or am i misinterpretting ? ...

is this a charles law formula??? [ (1/T) - ( V/T2) ] =0 at constant pressure? reply ...

in which of the following aqueous solution the degree of dissociation of water is maximum??? A) NH4Cl solution B) CH3COONa solution C) CH3COONH4 solution D) NaCl solution..... (corrwect answer is C _) ...

1) A sample of 14CO2 was mixed with ordinary 12CO2 for some expt. 10 ml. of this mixture at STP possesses the rate of 104 Disintegrations per min. How many milli-curie of radio-active carbon is reqd to prepare 60lt. of such a ...

when one drop of concentrated HCl solution is added to one litre of pure water at 25 celcius the pH drops sudenly from 7 to about 4 When the second drop is added the Ph of the solution further drops to about.... A) 3.7 B) 2 C ...

if a sample contains contains Na2CO3,,,,will it titrate with dil. HCl?? ...

A10% solution of cane sugar has undergone partial inversion according to the reaction: Sucrose+ Water -------> Glucose + Fructose. If the boiling point of solution is 100.27°C. (a) What is the average mass of the dissolve ...

*Image* please explain the physical significance in the ihtersection of the lines of partial vapour pressure wen un equil. ...

FeC2O4 --> Fe 3+ + CO2 a)oxidation b)reduction C)disproportion d)redox reaction e)conversion multiple option correct question........... ...

*Image* Please explain these graphs fully. ...

STATE WITH REASONS : T/F : 1) Degree of dissociation of weak acid decreases on dilution. 2) The smaller the value of Ka of a weak acid, greater is the hydrolysis constant of the conjugate base. ...

A 150 mL of solution of iodine is divided into two unequal parts, First part reacts with hypo solution in acidic medium. 15 mL of 0.4 hypo solution was consumed. 2nd part was added to 100 mL of 0.3 M NaOH solution. Residual b ...

(1) 1.5g of a monobasic acid when dissolved in 150g of water lowers the freezing point by 0.165°C. 0.5g of the same acid when titrated,after dissolution in water,requires 37.5ml of N/10 alkali. Calculate the degree of dissoc ...

(1) Sea water is found to contain 5.85% NaCl and 9.50% MgCl2 by weight of solution. Calculate its normal boiling point assuming 80% ionisation for NaCl and 50% ionisation of MgCl2[Kb(H2O) = 0.51kgmol-1K]. ...

(1) A complex is represented as CoCl3 . x NH3 . It's 0.1 molal solution in aq.solution shows ΔTf = 0.558°C. Kf for H2O is 1.86 K mol-1kg. Assuming 100% ionisation of complex and coordination no. of Co is six, calculate form ...