Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

The correct answer is Option d.

Explanation:

Ionic bond is formed when there is complete transfer of electrons from one atom to another. The atom which looses electrons is known as electropositive atom and the atom which gains electron is known as electronegative atom. Ionic compound, when dissolved in water will dissociate into its respective ions.

Covalent bond is defined when there is sharing of electrons between the two atoms forming a compound. It does not dissociate into its respective ions, when dissolved in water.

From the given options, the compound having both ionic and covalent bonds is NaOH.

Here, covalent bond is present between O and H forming ion.

When NaOH is dissolved in water, the equation follows:

As, it gets dissociated into its ions, therefore ionic bond is also present.

Hence, the correct answer is Option d.

As it is given that the initial concentration of sulfuric acid is 0.010 M.

Hence, the ICE table for first dissociation of sulfuric acid is as follows.

Initial:         0.010                       0        0

Change:     -0.010                +0.010    +0.010

Equilibrium:    0                    0.010        0.010

When second dissociation of sulfuric acid occurs which is partial then the ICE table will be as follows.

Initial:                 0.010                    0        0.010

Change:              -x                       +x          +x

Equilibrium:       0.010 - x              x            0.010 + x

Since, it is given that . Hence, formula  for  is as follows.

                               x = 0.0045

Hence, by using the equilibrium concentrations from the table and value of x we get the following.

    = x,        

                   = 0.0045 M

    = 0.010 - x

                     = 0.010 - 0.0045

                     = 0.0055 M

     = 0.010 + x

                   = 0.010 + 0.0045

                   = 0.0145 M

Explanation: