Question

Write word equation for the following molecular equation:

CaO + H₂0 → Ca (OH)₂ + Δ

Word equation:

State why [+ Δ ] is not written in the reaction, if ZnO reacts with H2O.

Answer 1

Calcium oxide + Water→Calcium hydroxide + heat

When ZnO reacts with H₂0, the equation formed is

ZnO + H₂0 →Zn(OH)₂

+ Δ is not written in the reaction because in this case heat is released not evolved.