The reaction is of first order both with respect to the persulphate and iodide ions. Taking the initial concentration as ' a ' and 'b' respectively and taking x as the concentration of the triodide at time t a differential rate equation can be written. Two suggested mechanisms for the reaction are

The general differential equation for the above reaction is

Figure shows a graph in where K is rate constant and T is temperature. The straight line BC has slope, and an intercept of 5 on y-axis. Thus , the energy of activation is:

For an exothermic chemical process occurring in two steps as :
i) A+B→X (slow)
ii) X→AB( fast
The progress of the reaction can be best described by :

With respect to the figure given below which of the following statement is correct

Mark correct statement about given graph:

The heats of combustion of carbon, hydrogen and acetylene are -394K.J, -286K.J and -1301 K.J respectively. Calculate heat of formation of

For the adsorption of solution on a solid surface Adsorption isotherm of was found of the type (Fig) This is when

For the same total mass which of the following will have the largest moment of inertia about an axis passing through its centre of mass and perpendicular to the plane of the body

The change in the state of hybridization of asterisked carbon in the following reaction is-

The geometrical arrangement and shape of I₃ are respectively

A rigid lamina is rotating about an axis passing Perpendiuclar to its plane through point O as shown in figure. The angular velocity of point B w.r.t. A is

The correct statement for the reaction NH +H^+→NH⁺

Correct statement regarding this reaction BF₃+NH₃¾→[F₃B¬NH₃]

STATEMENT-1 : No external force acts on system of two spheres which undergo a perfectly elastic head on collision. The minimum kinetic energy of this system is zero if the net momentum of this system is zero
STATEMENT-2 : In any two body system undergoing perfectly elastic head on collision, at the instant of maximum deformation, the complete kinetic energy of the system is converted to deformation potential energy of the system.

The equation of the tangent to the parabola y =  (x – 3)² parallel to the chord joining the points (3, 0) and (4, 1) is -

Length of the latus rectum of the parabola whose focus at (2, 3) and directrix is the line x – 4y + 3 = 0 is

• The length of the latus rectum of the parabola is always equivalent to four times the focal length of the parabola.