Hydrogen gas is always produced when acids react with metals because the acids contain hydrogen atoms that combine together and are released as hydrogen gas when a salt is made between the metal and the rest of the acid.
Examples:
Zn(s)+2HCl->H2(g)+ZnCl2
H2SO4+Mg(s)->H2(g)+MgSO4
it depends what type of acid u are using. If u are talking about stomach acids it can disolve the metal in 6-7 hours
No, a coin is not an alkali. It's a metal or metal alloy. Alkali metals are very reactive and coins are not made of them. These metals react with the water in air, so they are stored beneath a liquid they do not react with (like kerosene), or in a gas they will not react with (like an inert gas). Making coins out of alkali metals would give entirely new meanings to "depreciation" and the phrase "money burns a hole in my pocket."
the ability to not react with oxygen in the air
Organic acids react with alcohols to form an ester and water. Fats are made up of 3 molecules of carboxylic acids (organic acid) and 1 molecule of glycerol (alcohol). So fats are esters.
Group 1 elements are called alkali metals and all have a single electron in their outer shell/valence shell. These alkali metals are: Lithium (Li) Sodium (Na) Potassium (K) Rb (Rubidium) Caesium (Cs) Francium (Fr)
Yes, it is correct.
it depends what type of acid u are using. If u are talking about stomach acids it can disolve the metal in 6-7 hours
Hydrogen
Water and salt is made.
the acid eats away at carbonates
(the metal) oxide for example aluminum oxide
An acid and a base will react to produce a salt and (usually) water.
Yes, this is true; the reaction is called neutralization.
Yes, this is true; the reaction is called neutralization.
A salt and water.
No, a coin is not an alkali. It's a metal or metal alloy. Alkali metals are very reactive and coins are not made of them. These metals react with the water in air, so they are stored beneath a liquid they do not react with (like kerosene), or in a gas they will not react with (like an inert gas). Making coins out of alkali metals would give entirely new meanings to "depreciation" and the phrase "money burns a hole in my pocket."
When acids react with carbonates, carbon dioxide is produced. You can test this by waiting for the chemical reaction to take place and then using a bung to insert the gas into lime water!