2 years ago

What does the reproductive system control?

Chemistry

1 answer:

Aliun [14]2 years ago

3 0

Sperm and also sex what type of question is that lol

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Fe(s) + 2HCl(aq) --> FeCl2(aq) + H2(g)

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In the option(A) moles of HCl left are 0.100 moles which is wrong, making the option incorrect.

Explanation:

$Fe(s) + 2HCl(aq)\rightarrow FeCl_2(aq) + H_2(g)
$

Moles of HCl = n

Molarity of HCl = 1.0M

Volume of HCl solution = 30.0 mL = 0.030 L (1 mL = 0.001L)

$Moles=Molarity\times Volume (L)$

$n=1.0M\times 0.030 L=0.030 mol$

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According to recation , 1mol of Fe reacts with 2 mol HCl. Then 0.01 mole of Fe will recat with :

$\frac{2}{1}\times 0.01 mol= 0.02 mol$ of HCl

This means that HCl uis in excess , hence excessive reagent.

Moles of HCl left unreacted :

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But in the option moles of HCl left are 0.100 moles which is wrong, making the option incorrect.

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3 years ago