The temperature of a city was found to be `-9.3^@C.` A car was used, whose radiator was filled with 5 L of water. What quantity of antifreczing agent ethylene glycol were added to water of radiator in order to use the car for travelling? `("K of water 1.86 K kg mol"^(-1))`

Options

A. 3200g
B. 1670g
C. 1550g
D. 2100g

Answer

C

Explanation

To use car, `triangleT_(f) =T_(f)^@ -T_(f)=9.3K`
`triangleT_(f)=K_(f)m rArr 9.3=1.86m rArr m=5`
number of moles of ethylene glycol added to 5L of water of radiator `=5 xx 5=25`
`or 25 xx 62 rArr 1550g`