muriatic acid 11.7 M 3.5 M HCl 3.0 gallon HCl 9.66 g

muriatic acid 11.7 M 3.5 M HCl 3.0 gallon HCl 9.66 g

 

 

Muriatic acid, an industrial grade of concentrated HCl, is used to clean masonry and cement. Its concentration is 11.7 M.

(a) Write instructions for diluting the concentrated acid to make 3.0 gallons of 3.5 M acid for routine use (1 gal = 4 qt, 1 qt = 0.946 L).

(b) How many milliliters of the muriatic acid solution contain 9.66 g of HCl?

 

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(a)

MV = M’V’

( 참고 https://ywpop.tistory.com/2859 )

 

(11.7 M) (? gal) = (3.5 M) (3.0 gal)

? = (3.5) (3.0) / (11.7) = 0.897436 gal

 

 

 

(3.0 gal) (4 qt / 1 gal) (0.946 L / 1 qt)

= (3.0) (4) (0.946)

= 11.352 L

 

 

 

(0.897436 gal) (4 qt / 1 gal) (0.946 L / 1 qt)

= (0.897436) (4) (0.946)

= 3.395898 L

= 3.40 L

 

 

 

11.7 M 용액 0.897 gal (또는 3.40 L)에다가

최종 용액의 부피가 3.0 gal (또는 11.4 L) 되도록 증류수를 가하면,

3.5 M 용액 3.0 gal (또는 11.4 L)이 됩니다.

 

 

 

 

[ 관련 예제 https://ywpop.tistory.com/15099 ] (b) How many milliliters of the muriatic acid solution contain 9.66 g of HCl?