Given the ratio of amounts of nitrogen and oxygen in a particular gaseous mixture is $4: 1$. Calculate the ratio of number of their molecules?
Sulphuric acid reacts with sodium hydroxide as follows:
$$ \mathrm{H}_2 \mathrm{SO}_4+2 \mathrm{NaOH} \longrightarrow \mathrm{Na}_2 \mathrm{SO}_4+2 \mathrm{H}_2 \mathrm{O} $$
What will be the amount of sodium sulphate formed, when l L of 0.2 M sulphuric acid is allowed to react with l L of 0.2 M sodium hydroxide solution?
For the reactions,
$$ \begin{aligned} 2 \mathrm{Cl}(g) & \longrightarrow \mathrm{Cl}_2(g) \\ \mathrm{CO}_2(g) & \longrightarrow \mathrm{CO}(g)+\frac{1}{2} \mathrm{O}_2(g) \end{aligned} $$
What are the signs of $\Delta S$, respectively?
Which of the following statement is correct?
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