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Find whether the equation is correct balanced or not:
 
1. Statement: \(Zn + 3{HCl}\rightarrow ZnCl_2 + H_2\)
 
2. Statement: \(Na_2CO_3 + 2HCl \rightarrow 3NaCl + H_2O + CO_2\)
 
3. Statement: \(Ca{OH}_2 \rightleftharpoons Ca^{4+} + 2OH^-\)