3. A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution
a. The solution formed is an ideal solution
b. The solution is non-ideal showing +ve deviation from Raoult’s Law
c. The solution is non ideal showing -ve deviation from Raoult’s Law
d. n- heptane shows + ve deviation while ehtnaol shows-ve deviation from Raoult’s Law
ANSWER . B
Explanation : n- hepane will decrease the inter molecular forces between ethnol so it will increase the vapour pressure than expected from Raoult’s Law
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
