Question

Which formula equation shows a reversible reaction?

2Na + F2 → 2NaF
CaCOẠCaO + CO2
NH,Cl(s) 2NH3 (9) + HCl (9)
2H2O2 (aq) PE>2H20 (1) + O2(g)

Answer 1

Answer:2NaF is the correct one. It’s a simple combination and can be be split with relative ease

Step-by-step explanation:

Answer 2

The question is incomplete, here is the complete question:

Which formula equation shows a reversible reaction?

A:
`2Na+F_2\rightarrow 2NaF`

B:
`CaCO_3\rightarrow CaO+CO_2`

C:
`NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)`

D:
`2H_2O_2(aq.)+Pt\rightarrow 2H_2O(l)+O_2(g)`

Answer: The reversible reaction is
`NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)`

Step-by-step explanation:

Reversible reaction is defined as the reaction in which the products formed react together to give the reactants back. For general reversible chemical equation:

`A+B\rightleftharpoons C+D`

Irreversible reaction is defined as the reaction in which the reactants only lead to products and the reaction do not proceed back. For general irreversible chemical reaction:

`A+B\rightarrow C+D`

For the given options:

The reaction having an equilibrium sign between the reactants and products is equation C.

Hence, the reversible reaction is
`NH_4Cl(s)\rightleftharpoons 2NH_3(g)+HCl(g)`