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3 years ago

How many moles of Mg(OH)2 will react with 2.5 mol HCI?

Chemistry

1 answer:

bekas [8.4K]3 years ago

5 0

Answer:

1.25mole of Mg(OH)₂

Explanation:

The reaction is between Mg(OH)₂ and HCl, this is a neutralization reaction between an acid and a base.

Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

The balanced reaction equation is given above.

2 mole of HCl reacts with 1 mole of Mg(OH)₂

So, 2.5mole of HCl will react with $\frac{2.5}{2}$ = 1.25mole of Mg(OH)₂

The number of moles of Mg(OH)₂ is given as 1.25mol

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Answer:

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Rate(R) of the reaction in trail 4 ,when :

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$3.6\times 10^{-4} M/s=k[0.60 M]^a[0.60 M]^b[0.30 M]^c$ ...[4]

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By [3] ÷ [4], we get value of b ;

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By [2] ÷ [3], we get value of a ;

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Rate law of reaction is :

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Rate constant of the reaction = k

$9.0\times 10^{-5} M/s=k[0.30 M]^2[0.30 M]^0[0.30 M]^1$

$k=\frac{9.0\times 10^{-5} M/s}{[0.30 M]^2[0.30 M]^0[0.30 M]^1}$

$k=3.3\times 10^{-3} M^{-2} s^{-1}$

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