Which choices among the following are a molecular formula but NOT an empirical formula?

H_{2} O

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{F e}_{2} O_{3}

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N_{2} O_{4}

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{N a}_{2} {C l}_{2}

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Solution

The correct options are
B $N_{2} O_{4}$
D ${N a}_{2} {C l}_{2}$
Empirical formula is the simplest whole number ratio of element in compound.
$H_{2} O \Rightarrow H : O \Rightarrow 2 : 1 \Rightarrow$ Empirical
$F e_{2} O_{3} \Rightarrow F e : O \Rightarrow 2 : 3 \Rightarrow$ Empirical
$N_{2} O_{4} \Rightarrow N : O \Rightarrow 2 : 4 \Rightarrow$ Not Empirical
$N a_{2} C l_{2} \Rightarrow N a : C l \Rightarrow 2 : 2 \Rightarrow$ Not Empirical

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Similar questions

Q. Which choice is BOTH an empirical formula and a molecular formula?

Which of the following relations represents the correct relationship between empirical formula and molecular formula?

Q. Among which of the following statements about molecular and the empirical formulae is/are false?
I . A given compound can have the same molecular and empirical formula
II . The molecular formula is a whole number multiple of the empirical formula
III .

H_{2} O_{2}

represents the empirical formula of hydrogen peroxide

Give examples of compounds whose
(a) empirical formula is the same as the molecular formula.
(b) empirical formula is different from the molecular formula.

Q. An acid with molecular formula

C_{7} H_{6} O_{3}

forms three types of sodium salts, which are:

C_{7} H_{6} O_{3} N a, C_{7} H_{6} O_{3} {N a}_{2}

and

C_{7} H_{6} O_{3} {N a}_{3}

The basicity of this acid is:

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Which choices among the following are a molecular formula but NOT an empirical formula?

The correct options are B N2O4 D Na2Cl2Empirical formula is the simplest whole number ratio of element in compound.H2O⇒H:O⇒2:1⇒ EmpiricalFe2O3⇒Fe:O⇒2:3⇒ EmpiricalN2O4⇒N:O⇒2:4⇒ Not EmpiricalNa2Cl2⇒Na:Cl⇒2:2⇒ Not Empirical