Chem

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    What is the composition of nitrogen in the air?

    It makes up about 18% of the atmosphere by volume.

    How is nitrogen prepared in the lab?

    Heated ammonium chloride and sodium nitrite produce nitrogen.

    What are the physical properties of nitrogen gas?

    It is colorless, odorless, tasteless, and insoluble in water.

    How does nitrogen behave in chemical reactions?

    It is neutral to litmus and does not support combustion.

    What are some uses of nitrogen?

    It creates an inert atmosphere and is used in refrigeration.

    What is ammonia's characteristic smell?

    It has a pungent odor and is very soluble in water.

    How is ammonia prepared in the lab?

    By heating ammonium chloride with calcium hydroxide.

    What is the industrial method for producing ammonia?

    The Haber process combines nitrogen and hydrogen under pressure.

    What are the chemical properties of ammonia?

    It is weakly alkaline and turns red litmus blue.

    What are some applications of ammonia?

    Used as a refrigerant and in cleaning agents.

    What is another name for nitric acid?

    It is also known as 'Aqua fortis'.

    How is nitric acid prepared in the lab?

    By heating nitrates with concentrated sulfuric acid.

    What is the industrial method for producing nitric acid?

    The Ostwald process involves multiple oxidation stages.

    Why is nitric acid stored in brown bottles?

    To prevent decomposition by sunlight into nitrogen oxides.

    What are the physical properties of pure nitric acid?

    It is colorless and miscible with water.