Direction.
Directions: Are based on the graph given below:
Solubility-Temperature relationships for various salts.
(The Y-axis denotes Solubility (kg/litre of water))
If 1 mole of Potassium Chloride weighs 0.07456 kg, approximately. How many moles of Potassium Chloride can be dissolved in 100 litres of water at 36°C?
700
650
480
540
Correct Answer :
D. 540
Solubility of potassium chloride at 36°C = 0.4 kg./lt. so, in 100lir solution the amount of Potassium chloride dissolved in = 40 kg. Number of moles = 40 / 0.075 = 533 approx. 540 moles can be dissolved in 100 lt. of water at 36°C.
Related Questions
Suppose that each widget sells for Rs. 150. What is the profit earned by ABC Ltd. in July? (Profit is defined as the excess of sales revenue over total cost.)
2400
1600
400
0
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50
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1992
1993
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1999
1996
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30
50
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2000
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