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Equivalent Mass

What volume o...

Question

What volume of 0.25M Hcl is required to react completely with 22.6g of Na2co3 according to the equation Na2Co3+2Hcl=2Nacl=H20 (2) The molecular mass of organic compound is 78% and and its %composition is 92.4%C and 7.6%H.Find the molecular formula of the compound.

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78

92.4 %

C

7.6 % H

N a_{2} C O_{3}

H C l

C O_{2}

N a_{2} C O_{3} + 2 H C l \to 2 N a C l + C O_{2} + H_{2} O

0.1 M H C l

1 g

N a_{2} C O_{3}

N a H C O_{3}

N a_{2} C O_{3}

H C l

C O_{2}

N a_{2} C O_{3} + 2 H C l ⟶ 2 N a C l + C O_{2} + H_{2} O

C = 92.31 %

H = 7.69 %

78

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