Yes, when sodium reacts with Hydrochloric acid it replaces the hydrogen as hydrogen gas. 2Na + 2HCl = 2NaCl + H2
Although Calcium is lower on the activities series list I have seen calcium replace potassium in a reaction so the answer I think is YES
oh Dr Heisling
Assuming you have a "+" sign in between the two reactants, this represents a single replacement reaction. They products will be Mg and Na2SO4.
No, it depends entirely on what substances are involved. Sometimes chemical formulas will show the addition of reactants and on the side of the reactants there will be "NR," meaning "no reaction".
The type of reaction that always has an element and a compound as reactants is a single displacement reaction, or a substitution reaction. These are of the form A + BC ---> AC + B.
A single replacement reaction will not occur. In a single replacement reaction, either a metal will replace another metal in a compound, or an anion will replace another anion in a compound. Click on the related link to see the Wikipedia article on single displacement (single replacement).
It is inverse.
Single Replacement Reaction.
A single-replacement reaction
In a single-replacment reaction, atoms of an element replace atoms of another element in a compound. In a double-replacement reaction, two positive ions trade places between different ionic compounds.
Correctly represented, it's Mg + 2HCl --> MgCl2 + H2, and it's a single replacement reaction.
it's single-replacement. I took a test with a question like that and got 100%
This is called a replacement reaction. When one element replaces another in a compound, it is called single replacement or single displacement. An example isZn + 2HCl ---> ZnCl2 + H2 where the zinc replaces the hydrogen in the acid to form zinc chloride.
There is usually no reaction, because copper is below hydrogen in the electromotive series and therefore does not displace hydrogen from its compounds, and HCl is a nonoxidizing acid.
In a hydrochloric acid and magnesium single replacement reaction, hydrogen is given off.
Fluorine will replace bromine to produce the compound lithium fluoride in a single replacement reaction.
Although Calcium is lower on the activities series list I have seen calcium replace potassium in a reaction so the answer I think is YES