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GuDViN [60]
2 years ago
5

You wish to make a 0.405 M hydrochloric acid solution from a stock solution of 3.00 M hydrochloric acid. How much concentrated a

cid must you add to obtain a total volume of 100 mL of the dilute solution?
Chemistry
1 answer:
Vesnalui [34]2 years ago
4 0

Answer:

Explanation:

We have to make 100 mL 0f .405M HCl from 3 M solution of HCl .

volume of 3M to be taken required . Let this volume be V litre .

V litre of 3M will contain 3 V moles of HCl .

moles contained by 100 mL of ,405 HCl = .405 x .1 = .0405 moles .

So 3V = .0405

V = .0405 / 3 litre

= .0405 x 1000 / 4 mL

= 10.125 mL

So we have to take 10.125 mL of 3M HCl and add water to them to make its volume 100 mL .

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The molar mass of a compound can be calculated by summing the atomic masses of its constituent elements.

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