NaCl itself is not a change. If you mean the formation of it from sodium ad chlorine, however, it is a chemical change.
a chamical change is when something like your butt explodes into many pieces and you can't glue it back. it is also when you can't poo for seventeen years. thank you come again, no refunds , no checks. we will give free advertisement. must be 18 or older to call. now goodbye
The type of reaction represented by Zn plus 2NaCl yields 2Na plus ZnCl2 is an impossible one. It would be the other way around. 2Na + ZnCl2 --------> 2NaCl + Zn
H2SO4+2NaCl=2HCl+Na2SO4
Na2S(aq) + ZnCl2(aq) --> 2NaCl(aq) + ZnS(s)
Simply, the reactants are the original substances that are present at the beginning of a reaction. For example, in this reaction: 2Na + Cl2--> 2NaCl, the reactants are the Na and Cl.
It is a chemical change.2NaCl --> 2Na + Cl2
Combination Reaction
2Na+C12 -> 2NaCl
2NaCl+(NH4)2CO3
This is not a chemical reaction.
Ionisation in solution is not a chemical reaction. It can be written as one but still it's NOT: only physical change of state ( subscripted between brackets (s) or (aq) ) Na2S(s) --> 2Na+(aq) + S2-(aq)
By this, I assume you mean, the chemical reaction. If this is the case, the answer is 2I +2NaCl
You bet it is. Na2CO3 + 2HCl ==> 2NaCl + H2O + CO2
Na2CO3 + CaCl2 >> 2NaCl + CaCO3
Na2CO3 + 2HCl --> 2NaCl + CO2 + H2O
NaCO3 + CaCl2 --> 2NaCl + CaCO3 (s) In the above reaction, calcium carbonate is precipitated as a solid from the aqueous solution.
2NaCl + H2SO4 = Na2SO4 + 2HCl