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Which of the following statements is not correct ?
- a)All metal carbonates react with acid to give a salt, water and carbon dioxide
- b)Some metal react with acids to give salt, water and hydrogen
- c)All metal oxides react with water to give a salt and acid
- d)Some non-metal oxides react with water to form an acid
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Which of the following statements is not correct ?a)All metal carbonat...
**Explanation:**
The statement that is not correct is option C: All metal oxides react with water to give a salt and acid.
**Metal Oxides and Water:**
Metal oxides are compounds formed by the reaction of metals with oxygen. When metal oxides react with water, they generally form metal hydroxides.
For example:
- Sodium oxide (Na2O) reacts with water (H2O) to form sodium hydroxide (NaOH):
Na2O + H2O → 2NaOH
- Magnesium oxide (MgO) reacts with water (H2O) to form magnesium hydroxide (Mg(OH)2):
MgO + H2O → Mg(OH)2
**Acid-Base Reactions:**
Acid-base reactions occur when an acid reacts with a base to form a salt and water. Metal oxides can react with acids to form salts and water, but not the other way around. Metal oxides are considered basic in nature.
For example:
- Calcium oxide (CaO) reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl2) and water:
CaO + 2HCl → CaCl2 + H2O
**Correct Statements:**
a) All metal carbonates react with acid to give a salt, water, and carbon dioxide.
- This statement is correct. When metal carbonates react with acids, they produce a salt, water, and carbon dioxide gas. 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) Some metals react with acids to give salt, water, and hydrogen.
- This statement is correct. Some metals, such as magnesium and zinc, react with acids to produce a salt, water, and hydrogen gas. For example, when magnesium (Mg) reacts with hydrochloric acid (HCl), it forms magnesium chloride (MgCl2), water (H2O), and hydrogen gas (H2):
Mg + 2HCl → MgCl2 + H2
d) Some non-metal oxides react with water to form an acid.
- This statement is correct. Non-metal oxides, such as sulfur dioxide (SO2) and nitrogen dioxide (NO2), can react with water to form acidic solutions. For example, when sulfur dioxide (SO2) dissolves in water, it forms sulfurous acid (H2SO3):
SO2 + H2O → H2SO3
The statement that is not correct is option C: All metal oxides react with water to give a salt and acid.
**Metal Oxides and Water:**
Metal oxides are compounds formed by the reaction of metals with oxygen. When metal oxides react with water, they generally form metal hydroxides.
For example:
- Sodium oxide (Na2O) reacts with water (H2O) to form sodium hydroxide (NaOH):
Na2O + H2O → 2NaOH
- Magnesium oxide (MgO) reacts with water (H2O) to form magnesium hydroxide (Mg(OH)2):
MgO + H2O → Mg(OH)2
**Acid-Base Reactions:**
Acid-base reactions occur when an acid reacts with a base to form a salt and water. Metal oxides can react with acids to form salts and water, but not the other way around. Metal oxides are considered basic in nature.
For example:
- Calcium oxide (CaO) reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl2) and water:
CaO + 2HCl → CaCl2 + H2O
**Correct Statements:**
a) All metal carbonates react with acid to give a salt, water, and carbon dioxide.
- This statement is correct. When metal carbonates react with acids, they produce a salt, water, and carbon dioxide gas. 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) Some metals react with acids to give salt, water, and hydrogen.
- This statement is correct. Some metals, such as magnesium and zinc, react with acids to produce a salt, water, and hydrogen gas. For example, when magnesium (Mg) reacts with hydrochloric acid (HCl), it forms magnesium chloride (MgCl2), water (H2O), and hydrogen gas (H2):
Mg + 2HCl → MgCl2 + H2
d) Some non-metal oxides react with water to form an acid.
- This statement is correct. Non-metal oxides, such as sulfur dioxide (SO2) and nitrogen dioxide (NO2), can react with water to form acidic solutions. For example, when sulfur dioxide (SO2) dissolves in water, it forms sulfurous acid (H2SO3):
SO2 + H2O → H2SO3
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Community Answer
Which of the following statements is not correct ?a)All metal carbonat...
Some metal oxides (like Na2O, CaO, etc.) react with water to form metal hydroxides (bases) only and not salt and acid.
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Which of the following statements is not correct ?a)All metal carbonates react with acid to give a salt, water and carbon dioxideb)Some metal react with acids to give salt, water and hydrogenc)All metal oxides react with water to give a salt and acidd)Some non-metal oxides react with water to form an acidCorrect answer is option 'C'. Can you explain this answer?
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