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Gravity Separation

50 g limeston...

Question

50 g limestone react with 50% H2SO4 solution completely. What is the weight of H2SO4 required for the purpose ?

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Q. For titration of

1.0

H_{2} S O_{4}

solution against

50

1.0

N a O H

solution, what volume of

H_{2} S O_{4}

in milliliters will be required for neutralization?

Q. 100 ml of 10V

H_{2} O_{2}

solution is heated. The evolved gas is completely reacted with Ca to form CaO. The aqueous solution of Cao is neutralised by 50 ml of

H_{2} S O_{4}

solution. The molarity of

H_{2} S O 4

Q. How many millilitres of

0.1

H_{2} S O_{4}

solution will be required for complete reaction with a solution containing

0.125

N a_{2} C O_{3}

?

50 m L

of a solution of

N a_{2} C O_{3}

N a H C O_{3}

17.5 m L

0.1 M H_{2} S O_{4}

for neutralisation using phenolphthalein as indicator. Methyl orange is then added when further

25 m L

0.2 M H_{2} S O_{4}

was required. Calculate the weight of

N a_{2} C O_{3}

N a H C O_{3}

respectively in the solution.

Q. If 25 mL of a

H_{2} S O_{4}

solution reacts completely with 1.06 g of pure

N a_{2} C O_{3}

, what is the normality of this acid solution?

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