SOLUTION: Oil field - Topic i have a container of 32% Hydrochloric Acid (HCL) I need to blend this down by adding water to make it a 5% solution of HCL. If i needed a total of 100 gallo

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Question 740835: Oil field - Topic
i have a container of 32% Hydrochloric Acid (HCL)
I need to blend this down by adding water to make it a 5% solution of HCL.
If i needed a total of 100 gallons of 5% HCL, what would be the ratio of gallons of 32% HCL and gallons of water added to make 100 gallons of 5% HCL?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +a+ = gallons of 32% HCL
Let +b+ = gallons of water needed
-----------------
++.32a+%2F+%28+a+%2B+b+%29+=+.05+
++.32a+=+.05%2A%28+a+%2B+b+%29
+.32+%2F+.05+=+%28+a+%2B+b+%29+%2F+a+
+6.4+=+%28+a+%2B+b+%29+%2F+a+
--------------------
given:
+a+%2B+b+=+100+
+6.4+=+100+%2F+a+
+a+=+100+%2F+6.4+
+a+=+15.625+
and
+b+=+100+-+a+
+b+=+100+-+15.625+
+b+=+84.375+
---------------
+a%2Fb+=+15.625+%2F+84.375+
+a%2Fb+=+.1852+ answer
check:
++.32a+%2F+%28+a+%2B+b+%29+=+.05+
++%28.32%2A15.625%29+%2F+100+=+.05+
+5%2F100+=+.05+
OK