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chem ques!!!
- Thread starter Dean713
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titration is used to find the amt of alkali required to neutralize an known amt of acid
take the acid in the flask and add a drop of universal indicator. the solution turns pink. frm a burette, add alkali drop by drop and swirl the flask in a controlled manner so that the acid and alkali can mix
suddenly the mixture will turn colourless. this is an indication that all the acid has been neutralized.
see the amt of alkali required by subtracting the initial value noted frm the burette and the new value
but the salt we hav obtained in this way is impure
so the experiment is repeated in the same way taking the same amt of acid but not adding the indicator. this time, add only the known value of alkali.
evaporate the solution till crystallization pt and let it stand undisturbed fr some time....there..ur salt is ready!!!
take the acid in the flask and add a drop of universal indicator. the solution turns pink. frm a burette, add alkali drop by drop and swirl the flask in a controlled manner so that the acid and alkali can mix
suddenly the mixture will turn colourless. this is an indication that all the acid has been neutralized.
see the amt of alkali required by subtracting the initial value noted frm the burette and the new value
but the salt we hav obtained in this way is impure
so the experiment is repeated in the same way taking the same amt of acid but not adding the indicator. this time, add only the known value of alkali.
evaporate the solution till crystallization pt and let it stand undisturbed fr some time....there..ur salt is ready!!!
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im sry...i dont know direct synthesis...im a coordinated sci student
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There are many ways of making salts, depending on the type of salt:
1)Titration (explained above - usually used for reactive making salts of very reactive metals eg. sodium)
2) Adding metal to acid (used for making salts of metals which aren't very reactive eg Zinc)
An example is : to make zinc sulfate, you add zinc to sulfuric acid. You get zinc sulfate and hydrogen
3) Adding metal oxide to acid (used to make salts of unreactive metals eg copper)
An example : to make copper sulfate : you can't add copper to sulfuric acid because it doesn't react. You add copper oxide to sulfuric acid to get copper sulfate and water.
4) Making insoluble salts (eg silver chloride)
If you're making an insoluble salt, you need to react 2 SOLUBLE salts together.
An example, silver chloride is an insoluble salt, so you can add silver nitrate (soluble) and sodium chloride (soluble). You can then filter to get the insoluble salt
Hope that helped.
1)Titration (explained above - usually used for reactive making salts of very reactive metals eg. sodium)
2) Adding metal to acid (used for making salts of metals which aren't very reactive eg Zinc)
An example is : to make zinc sulfate, you add zinc to sulfuric acid. You get zinc sulfate and hydrogen
3) Adding metal oxide to acid (used to make salts of unreactive metals eg copper)
An example : to make copper sulfate : you can't add copper to sulfuric acid because it doesn't react. You add copper oxide to sulfuric acid to get copper sulfate and water.
4) Making insoluble salts (eg silver chloride)
If you're making an insoluble salt, you need to react 2 SOLUBLE salts together.
An example, silver chloride is an insoluble salt, so you can add silver nitrate (soluble) and sodium chloride (soluble). You can then filter to get the insoluble salt
Hope that helped.
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I've never heard of that? Can you give me an example or something?
Can you give me an example or something?