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Question
State whether the following statement is true or false. If false write the correct statement.
Solubility of most solids – decreases with increase in temperature
Options
True
False.
Solution
False.
Correct: Solubility of most solids – increase in temperature
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Define:
Solution
Define:
Saturated solutions
Give a reason why water is considered a universal solvent.
From the following substances given below state which will form a solution in the same.
(a) sodium carbonate
(b) calcium carbonate
(c) charcoal powder
(d) sodium sulphate
(e) table salt
(f) powdered particles of lead from a lead pencil
(g) iron powder
(h) copper filings
(i) sand particles
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If ‘X’ g. of potassium nitrate is added to 100 g. of water at 60°C and the salt dissolves completely then :
(a) is ‘X’ g. the solubility of potassium nitrate at 60°C.
(b) is the solution formed – saturated or unsaturated
(c) if on addition ‘X’ + ‘Y’ g. of potassium nitrate to the same amount of water at the same temperature and the solute now just remains behind after stirring then –
(d) is the solution now – saturated or unsaturated
(e) is ‘X’ + ‘Y’ g. the solubility of potassium nitrate.
State the characteristics of a true solution.
Differentiate between the following:
Solute and solvent – forming a solution.
Polar compounds are soluble in _____ solvents
In a solution, the component which is present in a lesser amount is called the solvent.
Vinu dissolves 50 g of sugar in 250 ml of hot water, Sarath dissolves 50 g of the same sugar in 250 ml of cold water. Who will get a faster dissolution of sugar? and Why?
