balance equation and what type of reaction this is

Question

____Ca(NO3)2+____NaOH=____Ca(OH)2+NaNO3

 

____Mg(NO3)2+____K3PO4=Mg3(PO4)2+____KNO3

Answer 1

Ca(NO₃)₂(aq) + 2NaOH(aq) ==> Ca(OH)₂(s) + 2NaNO₃(aq)  double replacement/double displacement reaction

 

3Mg(NO₃)₂(aq) + 2K₃PO₄(aq) ==> Mg₃(PO₄)₂(s) + 6KNO₃(aq)  double replacement/double displacement reaction