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Introduction to Electrophilic Substitution

Consider the ...

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Consider the following reaction sequence:12.CaCO3(s)+ 2HCI(aq)CaCl2(aq) + CO2(g) + H20heatCaO(s) + H20(g).CaCO3(s)If the percentage yield of the 1st step is 80% andthat of the 2nd step is 75%, then what is theexpected overall percentage yield for producingCaO from CaCl2?(1) 50%(2) 70%(3) 55%(4) 60%

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Q. Consider the following reaction sequence

{C a C l}_{2 (a q)} + {C O}_{2 (g)} + H_{2} O \to {C a C O}_{3 (s)} + {2 H C l}_{(a q)}

{C a C O}_{3 (s)} h e a t - - \to {C a O}_{(s)} + H_{2} O_{(g)}

if the percentage yield of the

1 s t

80

and that of the

2 n d

75

, then what is the expected overall percentage yield producing

C a O

{C a C l}_{2}

?

Q. If the percentage yield of the

1 s t

80 %

and that of the

2 n d

75 %

, then what is the expected overall percentage yield for producing

C a O_{3}

C a C l_{2}

?

Q. Two successive reactions,

A \to B

B \to C

80 %

80 %

, respectively. What is the overall percentage yield for conversion of

A

C

?

Q. The following table gives production yield per hectare of Wheat of

100

farmers of a village.

Production yield (Quintal/Hec)	$50 - 55$	$55 - 60$	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$
Number of farmers	$2$	$24$	$16$	$8$	$38$	$12$

Draw both Ogives for the above data. Hence obtain the median production yield.

Q. Two successive reactions,

A \to B

B \to C

80 %

80 %

, respectively. What is the overall percentage yield for conversion of

A

C

?

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