Which of the following statements is not correct?a)All metal carbonate...
Explanation:
The statement "All metal oxides react with water to give salt and acid" is not correct. Let's break down each option to understand why.
a) All metal carbonates react with acid to give a salt, water, and carbon dioxide:
This statement is correct. When a metal carbonate reacts with an acid, it produces a salt, water, and carbon dioxide. For example, when calcium carbonate (CaCO3) reacts with hydrochloric acid (HCl), it forms calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2):
CaCO3 + 2HCl → CaCl2 + H2O + CO2
b) All metal oxides react with water to give salt and acid:
This statement is not correct. Metal oxides do not react with water to give salt and acid. Instead, they typically react with water to form a metal hydroxide. For example, when sodium oxide (Na2O) reacts with water, it forms sodium hydroxide (NaOH):
Na2O + H2O → 2NaOH
This statement is correct. When certain metals react with acids, they produce a salt and hydrogen gas. For instance, when zinc (Zn) reacts with hydrochloric acid (HCl), it forms zinc chloride (ZnCl2) and hydrogen gas (H2):
Zn + 2HCl → ZnCl2 + H2
This statement is correct. Some non-metal oxides, such as sulfur dioxide (SO2) and nitrogen dioxide (NO2), react with water to form acids. For example, sulfur dioxide reacts with water to produce sulfurous acid (H2SO3):
SO2 + H2O → H2SO3
In conclusion, the statement "All metal oxides react with water to give salt and acid" is not correct. Metal oxides react with water to form metal hydroxides, not acids.
Which of the following statements is not correct?a)All metal carbonate...
The statement is not correct as the metal oxide reacts with water to form metal hydroxide.
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