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Physical Chemistry
in the approximation of the anharmonic oscillator and the rigid rotor , is given for the fundamental state NO:
Rotational constant B = 1.7 cm-1
the number of the vibration wave oscillator Ve = 2000cm-1
the anharmonicity constant Xe = 0.0075
establish the expression to determine the intranuclear distance in the equilibrium state.
Thank you
Rotational constant B = 1.7 cm-1
the number of the vibration wave oscillator Ve = 2000cm-1
the anharmonicity constant Xe = 0.0075
establish the expression to determine the intranuclear distance in the equilibrium state.
Thank you
Physical Chemistry
the reaction N2+O2=2NO2 contributes to air pollution. whenever a fuel is burnt in air at high temp. At 1500 K equilibrium constant K for it is 1.0*10^-5. suppose in a case [N2]=0.80 mol per litre and [O2]= 0.20 mol per litre before any reaction occurs. Calculate the equillibrium concerntrations of the reactants and the products after the mixture has been heated to 1500 K.
Physical Chemistry
If you have two strong acids such as HCl and HBr at the same concentration, why is HBr stronger considering that both are presumed to fully dissociate and will therefore both have the same concentration of H+ ions. Thanks.
Physical Chemistry
how can we calculate first ionization energy of an element?or does ionization energy will be given in exams?
Physical Chemistry
A suspension of calcium carbonate particles in water flows through a pipe. Your assignment is to determine both the flow rate and the composition of this slurry. You proceed to collect the stream in a graduated cylinder for 1.00 min; you then weigh the cylinder, evaporate the collected water, and reweigh the cylinder. The following results are obtained:
Mass of empty cylinder: 65.0g
Mass of cylinder + collected slurry: 565g
Volume collected: 455mL
Mass of cylinder after evaporation: 215g
Calculate
(a) The volumetric flow rate and mass flow rate of the suspension.
(b) The density of the suspension.
(c) The mass fraction of CaCO3 in the suspension.
Mass of empty cylinder: 65.0g
Mass of cylinder + collected slurry: 565g
Volume collected: 455mL
Mass of cylinder after evaporation: 215g
Calculate
(a) The volumetric flow rate and mass flow rate of the suspension.
(b) The density of the suspension.
(c) The mass fraction of CaCO3 in the suspension.
Physical Chemistry
Q. 90 ml of pure dry O2 is subjected to silent electric discharge. If only 10% of it is converted to O3 , volume of mixture of gases (O2,O3) after the reaction will be----and after passing through turpentile oil will be......
(i)84 ml and 78 ml (ii) 81 ml and 87 ml (iii) 78 ml and 84 ml (iv) 87 ml and 81 ml
(i)84 ml and 78 ml (ii) 81 ml and 87 ml (iii) 78 ml and 84 ml (iv) 87 ml and 81 ml
Physical Chemistry
Q. 50g CaCO3 will react with ......g of 20% HCl by weight-
(i) 36.5 gm (ii)73 gm (iii)109.5 gm (iv)182.5 gm
(i) 36.5 gm (ii)73 gm (iii)109.5 gm (iv)182.5 gm
Physical Chemistry
Q. 26cc of CO2 are passed over red hot coke. The volume of CO evolved is-
(i) 15cc (ii) 10cc (iii)32cc (iv)None
(i) 15cc (ii) 10cc (iii)32cc (iv)None
Physical Chemistry
Q. A gas mixture of 3 litres of propane and butane on complete combustion at 25'C produces 10 litres of CO2. Initial composition of propane and butane in the gas mixture is-
(i) 66.66%,33.33% (ii) 33.33%,66.66% (iii) 50%,50% (iv) 60%,40%
(i) 66.66%,33.33% (ii) 33.33%,66.66% (iii) 50%,50% (iv) 60%,40%
Physical Chemistry
how can negative ions exist in gasses?
