An element crystallizes in a B.C.C lattice with cell edge of 400 pm. Calculate the density if 250 g of this element contain _{2.5× 10}²⁴ atoms?

When a coordination compound is mixed with AgNO₃, 4 moles (question corrected) of AgCl are precipitated per mole of the compound. Write:

(i) Structural formula of the complex

(ii) IUPAC name of the complex

Show that time required for completion of 3/4^th reaction of first order is twice that of half-life of the reaction.

OR

Derive integrated rate equation for rate constant of zero order reaction.

Give reasons:

A. The α-hydrogen atoms of aldehydes and ketones are acidic in nature.

B. Oxidation of aldehydes is easier than ketones.

For the first order thermal decomposition reaction the following data were obtained:

Calculate the rate constant.

(Given: log2 = 0.301, log3 = 0.4771, log4 = 0.6021 )