Question

how do will prepare 600ml of 60%v/v alcohol from 30%v/v alcohol and 70%v/v alcohol?​

Answer 1

Answer:

Quantity required = 20parts of 60%+10 parts of 50%+ 1 ... What is the proof strength of 95% v/v alcohol. ... V = volume of isotonic solution in ml that can be prepared ...

Answer 2

600ml of 60% v/v alcohol will be prepared by adding 450ml of 70% v/v alcohol and 150ml of 30% v/v alcohol.

Given:

Quantity of 60% v/v alcohol=600 ml

To find:

The quantity of 70% and 30% v/v alcohols

Solution:

We know that the quantity of each alcohol can be obtained by using the concept of alligation.

The ratio of the quantities of the 70% v/v alcohol and 30% v/v alcohol to make 60 ml of 60% v/v alcohol is as follows-

The ratio of 30% v/v alcohol to 70% v/v alcohol=(70-60):(60-30)

=10: 30

=1: 3

Now, the total quantity of 60% v/v soolution=600ml

Out of this 600ml, the quantity of 30% v/v alcohol=1/4×600

=150 ml

The quantity of 70% v/v alcohol=3/4×600

=450 ml

Therefore, 600ml of 60% v/v alcohol will be prepared by adding 450ml

of 70% v/v alcohol and 150ml of 30% v/v alcohol.

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