Answer
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Hint There are a number of experiments illustrating the reaction of acid with metals. The most easy and popular among them is reaction between magnesium granules and hydrochloric acid. So, we can explain this experiment.
Complete step by step answer:
-Aim: To make a reaction of acid with metals.
-Material required: Beaker, magnesium ribbon, large test tube, rubber stopper with glass, hydrochloric acid (1M), and Retort stand with clamp.
-Procedure:
1. Take a test tube, add 1g of magnesium granules, then check all the fitting is assembled properly as illustrated below before adding hydrochloric acid to it.
2. Then add 40mL of hydrochloric acid to the test tube. Immediately cover the test tube with cork with glass tube. The other end of the delivery tube is let into a petri dish which is filled with soapy water.
3. Few bubbles of gas that are released in the test tube come out through the delivery tube. When the soap bubbles start to float up, hold a burning candle and observe carefully. Pop sound will be heard. The gas that is released is hydrogen gas.
4. When the magnesium stops reacting, no further hydrogen bubbles will be stopped.
-The reaction involved in this experiment:
\[Mg+HCl\to MgC{{l}_{2}}+{{H}_{2}}\]
Magnesium hydrochloric acid Magnesium chloride hydrogen gas
The hydrogen is let out as gas bubbles and the magnesium chloride remains in the large test tube. When the bubbles stop coming it means all magnesium is completely converted to magnesium chloride after reacting with hydrochloric acid.
Note: While illustrating the experiment we should keenly observe it and also should be alert. This may avoid lab accidents. Don't ignite the candle keeping it near the delivery tube. We can note the pH of the HCl before reacting with magnesium granules and after completion of the reaction.
Complete step by step answer:
-Aim: To make a reaction of acid with metals.
-Material required: Beaker, magnesium ribbon, large test tube, rubber stopper with glass, hydrochloric acid (1M), and Retort stand with clamp.
-Procedure:
1. Take a test tube, add 1g of magnesium granules, then check all the fitting is assembled properly as illustrated below before adding hydrochloric acid to it.
2. Then add 40mL of hydrochloric acid to the test tube. Immediately cover the test tube with cork with glass tube. The other end of the delivery tube is let into a petri dish which is filled with soapy water.
3. Few bubbles of gas that are released in the test tube come out through the delivery tube. When the soap bubbles start to float up, hold a burning candle and observe carefully. Pop sound will be heard. The gas that is released is hydrogen gas.
4. When the magnesium stops reacting, no further hydrogen bubbles will be stopped.
-The reaction involved in this experiment:
\[Mg+HCl\to MgC{{l}_{2}}+{{H}_{2}}\]
Magnesium hydrochloric acid Magnesium chloride hydrogen gas
The hydrogen is let out as gas bubbles and the magnesium chloride remains in the large test tube. When the bubbles stop coming it means all magnesium is completely converted to magnesium chloride after reacting with hydrochloric acid.
Note: While illustrating the experiment we should keenly observe it and also should be alert. This may avoid lab accidents. Don't ignite the candle keeping it near the delivery tube. We can note the pH of the HCl before reacting with magnesium granules and after completion of the reaction.
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