The heat of combustion of \[{{C}_{x}}{{H}_{y'}}\]carbon and hydrogen are a, b and c cal respectively. The heat of formation of \[{{C}_{x}}{{H}_{y}}\] will be
If \[A{{g}^{+}}+2N{{H}_{3}}\rightleftharpoons {{\left[ Ag{{(N{{H}_{3}})}_{2}} \right]}^{+}};{{K}_{1}}=1.7\times {{10}^{7}}\]\[;A{{g}^{+}}+C{{l}^{-}}\rightleftharpoons AgCl\,\,;{{K}_{2}}=5.4\times {{10}^{9}}\] Then for \[AgCl+2N{{H}_{3}}\rightleftharpoons {{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}}+C{{l}^{-}}\]; equilibrium constant will be
\[X+C+C{{L}_{2}}\]\[\xrightarrow{Hightemp}\]\[Y+CO,\,\,\,\,\,\,\,\,Y+2{{H}_{2}}O\xrightarrow{{}}Z+2HCl\] Compound Y is found in polymeric chain structure and is an electron deficient molecule. The compound Y is
An electron is continuously accelerated in a vacuum tube by applying potential difference. If the de-Broglie's wavelength is decreased by 10%, the change in the kinetic energy of the electron is (nearly)
In \[B{{F}_{3'}}\] the bond length is 1.30\[\overset{{}^\circ }{\mathop{A}}\,\]. When \[B{{F}_{3}}\] is allowed to react with \[M{{e}_{3}}\]N, it forms an adduct, \[M{{e}_{3}}N\to B{{F}_{3}}\]. The bond length of in the adduct is
A)
Greater than 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]
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B)
Smaller than 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]
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C)
Equal to 1.30 \[\overset{{}^\circ }{\mathop{A}}\,\]