Question

Metal + Acid -----> Salt + Hydrogen gas.
Write a suitable example for the above word equation and balance it.​

Answer 1

Metal = Sodium, Na

Acid = Hydrogen chloride, HCl

Salt = Sodium chloride, NaCl

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2Na + 2HCl ----> 2NaCl + H2

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Hope you got it

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Answer 2

$\mathfrak{\huge{\purple{\boxed{\boxed{ Question \::- }}}}}$

Metal + Acid -----> Salt + Hydrogen gas.

Write a suitable example for the above word equation and balance it.

$\mathfrak{\huge{\green{\boxed{\boxed{ Solution \::- }}}}}$

Metal + Acid -----> Salt + Hydrogen gas.

Here, a metal reacts with an acid to produce its salt and Hydrogen gas is evolved .

This salt can be acidic , basic or neutral, depending on the reactivity of the metal and acid .

Note that Noble Metals such as Gold, Silver etc do not generally react with acids .

• $Cu + 2HCl \overset{\Delta}{\longrightarrow} CuCl_{2} + H_{2}$

Here, the metal, copper reacts with Hydrochloric acid to give the salt CuCl_{2} and Hydrogen gas is evolved.

Other Examples Are :

• $2Na + H_{2} SO_{4} \overset{\Delta}{\longrightarrow} Na_{2} SO_{4} + H_{2}$

• $Fe + 2HCl \overset{\Delta}{\longrightarrow} FeCl_{2} + H_{2}$

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