In Ostwald’s process for the manufacture of nitric acid, the first step involves the oxidation of ammonia gas by oxygen gas to give nitric oxide gas and steam. What is the maximum weight of nitric oxide that can be obtained starting only with 10.00 g. of ammonia and 20.00 g of oxygen?
The balanced reaction is as given below:
\( 4NH_{ 3(g) }+5 O_{ 2 \; (g) }\rightarrow 4NO_{ (g) } + 6H_{ 2 }O_{ (g) } \)
\( 4 NH_{ 3 } = 4 × 17 g = 68 g\)
\( 5O_{ 2 }= 5 × 32 g = 160 g\)
\( 4 NO = 4 × 30 g = 120 g \)
\( 6H_{ 2 }O = 6 × 18 g = 108 g \)
Thus, \( NH_{ 3 }\) (68 g) reacts with \( O_{ 2 }\) (20g)
Therefore, 10 g of \( NH_{ 3 }\) reacts with
\( \dfrac{ 160 \; \times \; 10 }{ 68 }g\)
\( = 23.53 g \;of\; O_{ 2 }\)
But only 20 g of \( O_{ 2 }\) is available.
Hence, \( O_{ 2 }\) is a limiting reagent.
Now, \( 160 g \;of \;O_{ 2 }\) gives \( \dfrac{ 120 \times 20}{ 160 } g\) of N = 15 g of NO.
Therefore, max of 15 g of nitric oxide can be obtained.
Answered by Pragya Singh | 1 year agoFluorine reacts with ice and results in the change:
\( H_{ 2 }O_{ (s) } \; + \; F_{ 2 \; (g) } \; \rightarrow \; HF_{ (g) } \; + \; HOF_{ (g) } \)
Justify that this reaction is a redox reaction
Depict the galvanic cell in which the reaction is:
\( Zn_{\left ( s \right )} \;+ \;2 \;Ag_{\left ( aq \right )}^{+} \;\rightarrow \;Zn^{2+}_{\left ( aq \right )} \;+ \;2 \;Ag_{\left ( s \right )} \)
Further show:
(i) which of the electrode is negatively charged?
(ii) the carriers of the current in the cell.
(iii) individual reaction at each electrode.
Given the standard electrode potentials,
\( \dfrac{ K^{+}}{K}\)= –2.93V
\( \dfrac{ Ag^{+}}{Ag}\) = 0.80V
\( \dfrac{Hg^{2+}}{Hg}\) = 0.79V
\(\dfrac{ Mg^{2+}}{Mg}\) = –2.37V
\(\dfrac{Cr^{3+}}{Cr}\) = –0.74V
Arrange these metals in their increasing order of reducing power.
Arrange the given metals in the order in which they displace each other from the solution of their salts.
Al, Fe, Cu, Zn, Mg
Predict the products of electrolysis in each of the following:
(i) An aqueous solution of \( AgNO_{3}\) with silver electrodes
(ii) An aqueous solution \( AgNO_{3}\) with platinum electrodes
(iii) A dilute solution of \( H_{2}SO_{4}\) with platinum electrodes
(iv) An aqueous solution of \( CuCl_{2}\)with platinum electrodes.