Why does formic acid exist as dimer? What is its one consequence?

Why AlCl_3 exist as dimers?

Why does BF_3' act as a lewis acid?

Write the negation of the following statements and check the resulting statements are true,(ii)There does not exist a quadrilateral which has all its sides equal.

What do you mean by ozone hole ?What are its consequences ?

Why does boron trifluoride behave as a Lewis acid?

The freezing point of a solution of acetic acid (mole fraction is 0.02) in benzene is 277.4 K. Acetic acid exists partly as a dimer 2AhArrA_(2) Determine the equilibrium constant for dimerisation. Freezing point of benzene is 278.4 K ( K_(f) for benzene is 5)