Question

An alkane has Carbon and Hydrogen ratio (by mass) is $5.1428:1$. Its molecular formula is:

• A. $C_7{H}_{19}$
• B. $C_5{H}_{12}$
• C. $C_6{H}_{14}$
• D. $C_8{H}_{18}$

Answer 1

The correct option is C $C_6{H}_{14}$

$\left(A\right)$ $C_7{H}_{19}\Rightarrow \frac{84}{19}⟹4.42:1$

$\left(B\right)$ $C_5{H}_{12}\Rightarrow \frac{60}{12}⟹5:1$

$\left(C\right)$ $C_6{H}_{14}\Rightarrow \frac{72}{14}⟹5.1428:1$

$\left(D\right)$ $C_8{H}_{18}\Rightarrow \frac{96}{18}⟹5.33:1$

An alkane has carbon and hydrogen ratio (by mass) is $5.1428:1$. Its molecular formula is $C_6{H}_{14}$