What quantity of 72% acetic acid solution must be mixed with a 16% acetic acid solution to produce 141.78 ml of 63% solution?

The quantity of 72% of acetic acid is 123.83 ml

Step-by-step explanation:

Given as :

The produce quantity after mixing = 141.78 ml of 63%

Let The quantity of 72% of acetic acid = x ml

72% of acetic acid mix with 16% acetic acid

Now, According to question

72% of acetic acid × quantity of 72% of acetic acid + 16% acetic acid = The produce quantity after mixing

Or, × x ml + = 141.78 ml ×

Or, 72 x + 16 = 8932.14

Or, 72 x = 8932.14 - 16

Or, 72 x = 8916.14

∴  x =

i.e x = 123.83 ml

So, The quantity of 72% of acetic acid = x = 123.83 ml

Hence, The quantity of 72% of acetic acid is 123.83 ml  Answer

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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