Question

Single Replacement Practice
For each reaction, FIRST determine what type of single replacement reaction it is (a, b, c, or d). Check those answers against the answer key. Then predict the products of each reaction using the activity series to determine if each reaction will occur.

1. Br2 + NaCl Ú​​Type of SR: _____





2. K + H2O (l) à​​​​Type of SR: _____





3. Ca + Mg(NO3)2 Ú​​Type of SR: _____





4. K + H2SO4 Ú​​​​Type of SR: _____




​
5. Zn + NaOH Ú​​​​Type of SR: _____





6. Mg + H2O (l) à​​​​Type of SR: _____





7. Bi + HF Ú​​​​Type of SR: _____





8. Cl2 + KI Ú​​Type of SR: _____
(KI is potassium iodide)

Answer 1

$Br_2 + 2NaCl \to 2NaBr + Cl_2$

It is a simple replacement reaction

$K+H_2O\to KOH+H_2$

Potassium metal reacts very rapidly with water to form a colourless basic solution of potassium hydroxide (KOH) and hydrogen gas (H₂).

$3Ca + 2Mg(NO_3)_3 \to 3Ca(NO_3)_2 + 2Mg$

It is a replacement reaction where Magnesium is replaced by Calcium

$2K + H_2SO_4 \to K_2SO_4 + H_2$