alkili metals
A reactive non-metal.
single replacment reaction
single replacment
A metal more active than hydrogen in the electromotive series will react with an acid to form hydrogen gas.
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This is usually called a "displacement" reaction; a metal higher in the electromotive series is displacing a metal below it in the electromotive series in a compound of the latter.
Atoms do not have covalent bonds, they form them. A covalent bond is typically non-metal to non-metal, and hydrogen is considered a non meteal
By Definition of force work = force X displacement since the force depends upon the displacement which can either +ve, -ve or zero so if any object is retarding mean there can be many possibilities 1. if the force is applied opposite to the direction of object then the work done is negative. 2. if the force is on same direction then the work done is positive. in both the cases the displacement will be positive THIS KIND OF FORCE IS CALLED RETARDED FORCE
Metals react with hydrochloric acid to produce the metal chloride and hydrogen gas. The following is an example of the reaction between magnesium metal and hydrochloric acid. Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g)
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double-displacement reaction.
Do you mean 2NaCl + H2SO4 → Na2SO4 + 2HCl ? This is a double decomposition (also known as double displacement) reaction. The hydrogen and sodium cations are switching their respective anions.