Question

state two methods by which salt can be prepared.give one example of each​

Answer 1

By Double Decomposition

BaCl₂+H₂SO₄→BaSO₄↓+2HCl

AgNO₃+HCl→AgCl↓+HNO₃

Neutralisation

NaOH+HCl→NaCl+H₂O

MgO+2HCl→MgCl₂+H₂O

Answer 2

Neutralization Reaction

HCl +NaOH → NaCl + $H_{2}$O

Metal reaction with acids Metals interact with acids to remove hydrogen from the acids,

Zn + dil$H_{2}$S$O_{4}$ → ZnS$O_{4}$ + $H_{2}$O

Explanation:

The following processes can be used to prepare salts that are neutral substances:

1. Neutralization Reaction – To produce water, salt, and heat, is the process between an base and a acid.

Example: Hydrochloric acid responds to the production of sodium chloride (general salt), heat and water by sodium hydroxide.

The corresponding equation represents the reaction:

                        HCl +NaOH → NaCl + $H_{2}$O

2. Metal reaction with acids Metals interact with acids to remove hydrogen from the acids, resulting in salts and releasing hydrogen gas.

Example: Zinc interacts with dilute sulfuric acid to form the hydrogen gas producing zinc sulphate salt.

Here is the reaction:

           Zn + dil$H_{2}$S$O_{4}$ → ZnS$O_{4}$ + $H_{2}$O

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