8. Acids, Bases and Salts (41.1 MB)
8. Acids, Bases and Salts (41.1 MB)
8. Acids, Bases and Salts (41.1 MB)
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<strong>Acids</strong>, <strong>Bases</strong> <strong>and</strong> <strong>Salts</strong><br />
For example, the reaction between zinc <strong>and</strong> dil. sulphuric acid can be written as:<br />
Zn + H 2 SO 4 ⎯→ ZnSO 4 + H 2 ↑<br />
zinc dil sulphuric acid zinc sulphate hydrogen gas<br />
metal acid salt<br />
5. Reaction of acids with metal carbonates <strong>and</strong> hydrogen carbonates<br />
Reaction of acids with metal carbonates <strong>and</strong> hydrogen carbonates can be studied<br />
with the help of activity <strong>8.</strong>2.<br />
MODULE - 2<br />
Matter in our Surroundings<br />
Notes<br />
ACTIVITY <strong>8.</strong>3<br />
This experiment may be carried out in the chemistry laboratory of your study centre.<br />
Aim: To study the reaction of acids with metal carbonates <strong>and</strong> hydrogen carbonates.<br />
What is required?<br />
One test tube, one boiling tube fitted with a cork, thistle funnel <strong>and</strong> delivery tube, sodium<br />
carbonate, sodium hydrogen carbonate, dilute HCl <strong>and</strong> freshly prepared lime water.<br />
What to do?<br />
Take the boiling tube <strong>and</strong> add about 0.5 g sodium carbonate to it.<br />
Take about 2 mL of freshly prepared lime water in a test tube.<br />
Thistle funnel<br />
Dilute HCl<br />
St<strong>and</strong><br />
Delivery tube<br />
Cork<br />
Clamp<br />
Lime water<br />
Boiling tube<br />
Dilute HCl<br />
Bubbles of CO 2<br />
Na CO<br />
2 3<br />
Fig. <strong>8.</strong>2: Experimental set up to study the reaction of acids with metal<br />
carbonates <strong>and</strong> hydrogen carbonates<br />
SCIENCE AND TECHNOLOGY<br />
161
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