Complete the reactions below for the extraction of elemental potassium and rubidium. + KCl(l) reversiblearrow + K(g) Ca(s) + 2 reversiblearrow 2 +CaCl_2(s) Select the type of reaction that is represented above. O Addition O Double displacement O Reduction O Decomposition

In a double displacement reaction, ions of two compounds exchange partners to form two new compounds. Potassium ions in potassium chloride exchange with calcium ions in calcium chloride to form potassium and calcium chloride.

The equation for the double shift reaction above can be written as

KCl(l) + Ca(s) --- -> K(g) + CaCl2(s)

To balance the equation, add 2 as coefficient of KCl (l) to balance the chloride atoms.

now potassium is unbalanced so we add a coefficient of 2 on the K(g) to balance potassium atoms.

The final equation is:

2KCl(l) + Ca(s) -----> 2K(g) + CaCl2(s)

This equation shows that when potassium chloride (KCl) and calcium (Ca) combine, they react to produce potassium gas (K) and calcium chloride (CaCl2).

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