AuCI,(aq)+Ca(s)=
need help to balance this equation please
2AuCl(aq) + Ca(s) ==> CaCl2(aq) + 2Au(s)
You should be aware that Ca metal reacts with H2O [the aq part of AuCl(aq)] to produce Ca(OH)2 + H2 which means the AuCl reaction could be minimal.
The chemical equation you provided represents the reaction between aqueous gold(I) chloride (AuCl) and solid calcium (Ca).
To determine the products of the reaction, we need to understand the reactivity series. The reactivity series is a list of metals arranged in order of their reactivity. Metals higher in the series have a greater tendency to lose electrons and form positive ions.
In this case, calcium (Ca) is more reactive than gold (Au). Therefore, calcium will displace gold from its chloride compound. This type of reaction is known as a displacement reaction or a single replacement reaction.
The balanced chemical equation for the reaction can be written as follows:
2AuCl(aq) + 3Ca(s) → 3CaCl2(aq) + 2Au(s)
This equation shows that 2 moles of gold(I) chloride react with 3 moles of calcium to produce 3 moles of calcium chloride and 2 moles of gold. The (aq) and (s) represent the physical states of the substances: (aq) denotes aqueous (dissolved in water) and (s) represents solid.