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Sulphuric Acid

3.9g of a mix...

Question

3.9g of a mixture of Al and Al2O3 is reacted with dilute HCl then 224ml H2 gas is evolved at NTP. Calculate the percentage of All in the mixture

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3.90

g of a mixture of

A l

{A l}_{2} O_{3}

, when reacted with a solution of

N a O H

840

mL of gas at NTP. Find

%

A l_{2} O_{3}

in mixture (as nearest integer).

3.90

g of a mixture of

A l

{A l}_{2} O_{3}

, when reacted with a solution of

N a O H

840

mL of gas at NTP. Find

%

A l

in the mixture (as nearest integer).

Q. A mixture of aluminium and zinc weighing

1.67

g was completely dissolved in acid and evolved

1.69

H_{2}

at NTP. The weight of aluminium in the original mixture is:

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