Question

na₂co₃ + 2hcl → 2nacl + h₂o + co₂
the reaction above is classified as a
a single - replacement
b synthesis
c decomposition
d combustion reaction
e double - replacement

Explanation:

Step1: Analyze reaction type

In a double - replacement reaction, the positive and negative ions of two ionic compounds exchange places.
For the reaction \(Na_{2}CO_{3}+2HCl
ightarrow 2NaCl + H_{2}O+CO_{2}\), \(Na^{+}\) from \(Na_{2}CO_{3}\) combines with \(Cl^{-}\) from \(HCl\) and \(H^{+}\) from \(HCl\) combines with \(CO_{3}^{2 -}\) from \(Na_{2}CO_{3}\).

Answer:

E. double - replacement