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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.
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Solution
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.
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