Question

5 fill in the blank 1 point 5. type your answer... zn + type your answer... hcl → type your answer... zncl₂ + type your answer... h₂

Explanation:

Step1: Identify the reaction type

This is a single - displacement reaction where zinc (Zn) reacts with hydrochloric acid (HCl). The general form of a single - displacement reaction is \(A + BC
ightarrow AC + B\), where in this case \(A = Zn\), \(B = H\) and \(C=Cl\).

Step2: Balance the chemical equation

• Let's start with the unbalanced equation: \(Zn+HCl

ightarrow ZnCl_{2}+H_{2}\)

• First, balance the chlorine atoms. On the right side, we have 2 chlorine atoms in \(ZnCl_{2}\), so we need 2 moles of \(HCl\) on the left side. So now the equation becomes \(Zn + 2HCl

ightarrow ZnCl_{2}+H_{2}\)

• Now check the zinc and hydrogen atoms. The number of zinc atoms on the left (1) and right (1) is balanced. The number of hydrogen atoms on the left (2 in \(2HCl\)) and on the right (2 in \(H_{2}\)) is balanced. Also, there is no coefficient needed for \(Zn\) as it is already balanced. So the balanced equation is \(1Zn + 2HCl

ightarrow 1ZnCl_{2}+1H_{2}\)

Answer:

The coefficients (from left to right) are 1, 2, 1, 1. So the blanks should be filled with 1, 2, 1, 1 respectively.