To determine which of the statements are true for all nitrates when they are heated, let's analyze each statement one by one:

Statement I: Brown fumes are produced.
This statement is true for most nitrates when they are heated. When nitrates are heated, they decompose and release nitrogen dioxide gas, which appears as brown fumes.

Statement II: There is a color change.
This statement is also true for most nitrates when they are heated. The color change can vary depending on the specific nitrate, but generally, a color change occurs due to the decomposition of the nitrate compound.

Statement III: Oxygen is evolved.
This statement is true for all nitrates when they are heated. The decomposition of nitrates results in the release of oxygen gas.

Statement IV: There is a decrease in mass.
This statement is true for all nitrates when they are heated. During the decomposition process, the nitrate compound breaks down into different gases, resulting in a decrease in mass.

Based on the analysis of each statement, the correct answer is option D: I, II, III, and IV are all true for all nitrates when they are heated.

Question

To determine which of the statements are true for all nitrates when they are heated, let's analyze each statement one by one:

Statement I: Brown fumes are produced.
This statement is true for most nitrates when they are heated. When nitrates are heated, they decompose and release nitrogen dioxide gas, which appears as brown fumes.

Statement II: There is a color change.
This statement is also true for most nitrates when they are heated. The color change can vary depending on the specific nitrate, but generally, a color change occurs due to the decomposition of the nitrate compound.

Statement III: Oxygen is evolved.
This statement is true for all nitrates when they are heated. The decomposition of nitrates results in the release of oxygen gas.

Statement IV: There is a decrease in mass.
This statement is true for all nitrates when they are heated. During the decomposition process, the nitrate compound breaks down into different gases, resulting in a decrease in mass.

Based on the analysis of each statement, the correct answer is option D: I, II, III, and IV are all true for all nitrates when they are heated.

Knowee AI · Accepted Answer

To determine which of the statements are true for all nitrates when they are heated, let's analyze each statement one by one:

Statement I: Brown fumes are produced.
This statement is true for most nitrates when they are heated. When nitrates are heated, they decompose and release nitrogen dioxide gas, which appears as brown fumes.

Statement II: There is a color change.
This statement is also true for most nitrates when they are heated. The color change can vary depending on the specific nitrate, but generally, a color change occurs due to the decomposition of the nitrate compound.

Statement III: Oxygen is evolved.
This statement is true for all nitrates when they are heated. The decomposition of nitrates results in the release of oxygen gas.

Statement IV: There is a decrease in mass.
This statement is true for all nitrates when they are heated. During the decomposition process, the nitrate compound breaks down into different gases, resulting in a decrease in mass.

Based on the analysis of each statement, the correct answer is option D: I, II, III, and IV are all true for all nitrates when they are heated.

Which of the following statements are true for all nitrates when they are heated . I Brown fumes are produced II there is a color change III oxygen is evolved IV there is a decrease in mass AI and II only BII and III only CIII and IV only DI , II , III and IV only

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