Question

Place the following in order of increasing entropy

1) a system of 1 mole water and 1 mole alcohol, separated, at 50 ° C

2) a system of 1 mole water mixed with 1 mole alcohol, at 50 ° C

3) 1 mole ice, at 0° C

4) 1mole water at 0° C

Answer 1

entropy means degree of randomness or degree of disorder of system

3) 1 mole ice, at 0° C

ice has lowest entropy because ice is solid so minimum radomness

4) 1mole water at 0° C

it has more entropy than ice

1) a system of 1 mole water and 1 mole alcohol, separated, at 50 ° C

it has more randomness than water at 0 degree beacuse with increase in temperature, entropy increases

2) a system of 1 mole water mixed with 1 mole alcohol, at 50 ° C

it has highest entropy as water and alcohol are mixed as maaximum randomness

so order is 3 4 1 2