Q.
Select the graph which can be used to determine standard free energy of the reaction given below:
$\left(CaCO\right)_{3}\left(\right.s\left.\right)\rightleftharpoonsCaO\left(\right.s\left.\right)+\left(CO\right)_{2}\left(\right.g\left.\right)$
Assume that the reaction is at equilibrium.
Solution:
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2. A mixture of methane and ethene in a molar ratio of $x:y$ has an average molecular mass of $20 u$ . The mean molar mass when they are mixed in the molar ratio of $y:x$ will be -
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3. An organic compound contains $78 \%$ (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of $C$ is $12, H$ is $1$]
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5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm$^3$. The molality of the solution is
[Given that molecular mass of NaOH = 40 g mol$^{-1}$]
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