Write the steps you would use for making tea. Use the words solution,solvent,solute,dissolve,soluble,insoluble,filtrate and residue.
(N/A) Method of preparation of tea:
$(i)$ Take some water $(solvent)$ in a pan and heat it.
$(ii)$ Add some sugar $(solute)$ and boil to $dissolve$ the sugar completely; the obtained homogeneous mixture is called a $solution$.
$(iii)$ Add tea leaves (which are $insoluble$) to the $solution$ and boil the mixture.
$(iv)$ Add milk and boil again.
$(v)$ Filter the mixture through a tea strainer. The liquid collected in the cup is the $filtrate$ (containing $soluble$ substances),and the tea leaves left behind in the strainer are the $residue$.
$(i)$ Take some water $(solvent)$ in a pan and heat it.
$(ii)$ Add some sugar $(solute)$ and boil to $dissolve$ the sugar completely; the obtained homogeneous mixture is called a $solution$.
$(iii)$ Add tea leaves (which are $insoluble$) to the $solution$ and boil the mixture.
$(iv)$ Add milk and boil again.
$(v)$ Filter the mixture through a tea strainer. The liquid collected in the cup is the $filtrate$ (containing $soluble$ substances),and the tea leaves left behind in the strainer are the $residue$.
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Pragya tested the solubility of four different substances at different temperatures and collected the data as given below (results are given in the following table,as grams of substance dissolved in $100 \,g$ of water to form a saturated solution).
< strong>Substance Dissolved < strong>$283 \,K$ < strong>$293 \,K$ < strong>$313 \,K$ < strong>$333 \,K$ < strong>$353 \,K$ Potassium nitrate $21$ $32$ $62$ $106$ $167$ Sodium chloride $36$ $36$ $36$ $37$ $37$ Potassium chloride $35$ $35$ $40$ $46$ $54$ Ammonium chloride $24$ $37$ $41$ $55$ $66$
$(a)$ Find the solubility of each salt at $293 \,K$. Which salt has the highest solubility at this temperature?
$(b)$ What is the effect of change of temperature on the solubility of a salt?
| < strong>Substance Dissolved | < strong>$283 \,K$ | < strong>$293 \,K$ | < strong>$313 \,K$ | < strong>$333 \,K$ | < strong>$353 \,K$ |
| Potassium nitrate | $21$ | $32$ | $62$ | $106$ | $167$ |
| Sodium chloride | $36$ | $36$ | $36$ | $37$ | $37$ |
| Potassium chloride | $35$ | $35$ | $40$ | $46$ | $54$ |
| Ammonium chloride | $24$ | $37$ | $41$ | $55$ | $66$ |
$(a)$ Find the solubility of each salt at $293 \,K$. Which salt has the highest solubility at this temperature?
$(b)$ What is the effect of change of temperature on the solubility of a salt?
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View SolutionHow would you confirm that a colorless liquid given to you is pure water?
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View SolutionClassify the following as chemical or physical changes:
$1$. Cutting of trees
$2$. Melting of butter in a pan
$3$. Rusting of almirah
$4$. Boiling of water to form steam
$5$. Passing of electric current through water and the water breaking down into hydrogen and oxygen gases
$6$. Dissolving common salt in water
$7$. Making a fruit salad with raw fruits
$8$. Burning of paper and wood
$1$. Cutting of trees
$2$. Melting of butter in a pan
$3$. Rusting of almirah
$4$. Boiling of water to form steam
$5$. Passing of electric current through water and the water breaking down into hydrogen and oxygen gases
$6$. Dissolving common salt in water
$7$. Making a fruit salad with raw fruits
$8$. Burning of paper and wood
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View SolutionWhat is meant by a pure substance?
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View SolutionWhat type of mixtures are separated by the technique of crystallisation?
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