Sodium (Na) reacts with chlorine (CI) to form sodium chlorine (NaCI). Predict how potassium (K) will react with chlorine (CI). Explain your prediction.

Explanation:

K would react with Cl to for KCl₂.

This is because while Na is in group I in the periodic table, K is in group II. This means K has two (2) valence electrons while Na has one (1). This means that while Na needs to lose only one (1) electron to achieve a stable configuration, K needs to lose two (2) electrons.

Therefore K would require 2 chlorine atoms to donate its valence electrons hence the KCl₂ formulae. Remember that each Cl requires to be donated one electron to achieve stable electron configuration.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml