If radiation of all wavelengths from ultraviolet to infrared ispassed through hydrogen gas at room temperature absorption lines will be observed in the
A. Lymann series
B. Balmer series
C. Both (A) and (B)
D. Neighter (A) nor (B)
The redox reaction taking place on electrolysis is an follows :
`2Cl^(-)(aq) to Cl_(2)(g)+2e^(-)`
`(2H_(2)O(l)+2e^(-) to H_(2)(g)+2OH^(-)(aq))/(2Cl^(-)(aq)+2H_(2)O(l) to H_(2)(g)+Cl_(2)(g)+2OH^(-)(aq)`
Step I. Calculation of the mass of NaOH formed
Quantity of...
The information suggest that the gas (A) is `H_(2)S` while the gas (B) is `SO_(2)`. Both turn acidified `K_(2)Cr_(2)O_(7)` paper green.
`K_(2)Cr_(2)O_(7)+4H_(2)SO_(4)+underset("(Gas A)")(3H_(2)S) to K_(2)SO_(4) + underset("(green)")(Cr_(2)(SO_(4))_(3))+7H_(2)O+3(S)`
`K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+underset("(Gas B)")(3SO_(2)) to...
Correct Answer - D
Energy of infrared radiation is less than the energy of ultraviolet radiation. In options (a), (b) and (c) energy released will be more, while in option (d)...
From nth energy state a total of `(n(-1))/(2)` lines are emitted.
`:. " " (n(n-1))/(2)=10or n=5`
Further , `" " E_(n)=(E_(1))/(n^(2))`
`:." " E_(5)=(-13.6)/((5^(2)))=-0.544 eV`
The energy needed to take...
`T_(1) =273 +37=310 K, T_(2) = 273+23 = 296 K`. Pressure and amount of the gas are kept constant,
So `(V_(1))/(T_(1))= (V_(2))/(T_(2)) therefore V_(2) = V_(1)xx (T_(2))/(T_(1)) = 1500 xx...
Correct Answer - A::C::D
Room temperature `rArr n = 1`
Upon absorption excitations takes place to many higher states which upon de-excitation emit all U.V., infrared and visible light.