Question

plz help me fast question number4,5,6​

Answer 1

4) what lead acetate solution is added to potassium iodine solution, a precipitate is form which is

answer :  Lead acetate is a colourless compound. On coming in contact with potassium iodide crystal, the formation of lead iodide occurs that is bright yellow in colour. Also, since lead has high mass, therefore the precipitate formed, settles down because of its heaviness.

5) this gas has rotten egg smell

answer : Hydrogen sulfide (H2S) is a colourless gas with a characteristic odour of rotten eggs which being denser than air may pool in low areas in still conditions.

6) when sodium carbonate reacts with dilute hydrochloric acid, the gas evolved is

answer : Carbon dioxide (CO2) gas is evolved during the reaction. We pass this gas through lime water it turns milky because of the CO2 passing through it. If we keep on passing the gas through the milky lime water, it would become clear again.

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Answer 2

Answer:

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What lead acetate solution is added to potassium iodine solution, a precipitate is form which is

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Lead acetate is a colourless compound. On coming in contact with potassium iodide crystal, the formation of lead iodide occurs that is bright yellow in colour. Also, since lead has high mass, therefore the precipitate formed, settles down because of its heaviness.

$\huge\color{aqua}\implies\huge \mathtt \red{ Question }$

This gas has rotten egg smell

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Hydrogen sulfide (H2S) is a colourless gas with a characteristic odour of rotten eggs which being denser than air may pool in low areas in still conditions.

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When sodium carbonate reacts with dilute hydrochloric acid, the gas evolved is

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Carbon dioxide (CO2) gas is evolved during the reaction. We pass this gas through lime water it turns milky because of the CO2 passing through it. If we keep on passing the gas through the milky lime water, it would become clear again.