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Relationship between Vapor Density & Relative Molecular Mass

A mixture con...

Question

A mixture containing equimolar amounts of $C a ({O H)}_{2}$ and $A I {O H)}_{3}$ requires $0.5 L$ of $4.0 M H C I$ to react with it completely. Moles of the mixture are:

0.04

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0.4

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0.8

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0

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Solution

The correct option is C $0.4$
Let, there be x moles of $C a (O H)_{2}$ and $A l (O H)_{3}$
$C a (O H)_{2} + 2 H C l \to C a C l_{2} + 2 H_{2} O$
$∴ x m o l C a (O H)_{2}$ requires $2 x m o l$ of $H C l$ .
$A l (O H)_{3} + 3 H C l \to A l C l_{3} + 3 H_{2} O$
$∴ x m o l A l (O H)_{3}$ requires $3 x m o l$ of $H C l$ .
$∴$ Total of $5 x m o l$ of $H C l$ is required.
Moles of $H C l$ available = $0.5 \times 4 = 2 m o l$
$5 x = 2 \Rightarrow x = 0.4$

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QUESTION 2.6

How many mL of 0.1 M HCl are required to react completely with 1 g mixture of ${N a}_{2} C O_{3}$ and $N a H C O_{3}$ containing equimolar amounts of both?

Q. How many mL of

0.1 N H C l

are required to react completely with

1 g

mixture of

N a_{2} C O_{3}

and

N a H C O_{3}

containing equimolar amounts of both?

V

mL of

0.1

H C l

is required to react completely with

1

g mixture of

N a_{2} C O_{3}

and

N a H C O_{3}

containing equimolar amounts of two.

V

is:

Q. The amount of mL of

0.1 N H C l

required to react completely with

1

g mixture of

{N a}_{2} C O_{3}

and

N a H C O_{3}

containing equimolar amounts of the two is (as the nearest integer) :

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A mixture containing equimolar amounts of Ca(OH)2 and AIOH)3 requires 0.5L of 4.0MHCI to react with it completely. Moles of the mixture are:

The correct option is C 0.4Let, there be x moles of Ca(OH)2 and Al(OH)3Ca(OH)2+2HCl→CaCl2+2H2O∴xmolCa(OH)2 requires 2xmol of HCl.Al(OH)3+3HCl→AlCl3+3H2O∴xmolAl(OH)3 requires 3xmol of HCl.∴ Total of 5xmol of HCl is required.Moles of HCl available = 0.5×4=2mol5x=2⇒x=0.4

A mixture containing equimolar amounts of $C a ({O H)}_{2}$ and $A I {O H)}_{3}$ requires $0.5 L$ of $4.0 M H C I$ to react with it completely. Moles of the mixture are: