Question

2K + MgCh2 -> 2KCI + Mg

Which of the following statements best describes the reaction?

O This reaction is a double replacement reaction because K replaced Mg and a redox reaction because the ion charges of the elements changed from a 0 charge on K to +1 charge, and a +2 charge on Mg to a 0 charge.

• This reaction is a double replacement reaction because K replaced Mg and not a redox reaction because the ion charges of the elements remained the same.

This reaction is a single replacement reaction because K replaced Mg and a redox reaction because the ion charges of the elements changed from a 0 charge on K to +1 charge, and a +2 charge on Mg to a 0 charge.

O This reaction is a single replacement reaction because K replaced Mg and not a redox reaction
because the ion charges of the elements remained the same.

Answer 1

The third option

Step-by-step explanation:

This reaction is a single replacement reaction because K replaced Mg and a redox reaction because the ion charges of the elements changed from a 0 charge on K to +1 charge, and a +2 charge on Mg to a 0 charge.