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Gujarati JEE Chemistry : રસાયણિક ગતિકી

Multiple Choice Questions

61.

30 àª®àª¿àª¨àª¿àªŸ
120 àª®àª¿àª¨àª¿àªŸ
4 àª•àª²àª¾àª•
15 àª®àª¿àª¨àª¿àªŸ

62.

0.25 àª•àª²àª¾àª•
1 àª•àª²àª¾àª•
4 àª•àª²àª¾àª•
0.5 àª•àª²àª¾àª•

63.

$1 over 16$
$1 over 8$
$1 fourth$
$1 half$

64. નીચેના પૈકી કયું પ્રથમ ક્રમની પ્રક્રિયાનો પ્રક્રિયા સમય સૂચવે છે ?

$fraction numerator 2.303 over denominator straight K end fraction log space 4$
$fraction numerator 2.303 over denominator straight K end fraction log space 3$
$fraction numerator 2.303 over denominator straight K end fraction log 3 over 4$
$fraction numerator straight K over denominator 2.303 end fraction log space 4 over 3$

65.

28 àª¸à«‡àª•àª¨à«àª¡
42 àª¸à«‡àª•àª¨à«àª¡
(14)² àª¸à«‡àª•àª¨à«àª¡
(14)³ àª¸à«‡àª•àª¨à«àª¡

42 àª¸à«‡àª•àª¨à«àª¡

$100 percent sign space rightwards arrow for space space space space straight t subscript begin inline style bevelled 1 half end style end subscript space space space of straight A subscript 0 over 2 space rightwards arrow for space space space space straight t subscript begin inline style bevelled 1 half end style end subscript space space space of straight A subscript 0 over 4 rightwards arrow for space space space space straight t subscript begin inline style bevelled 1 half end style end subscript space space space of straight A subscript 0 over 8 therefore space straight T space equals space 3 space cross times space straight t subscript begin inline style bevelled 1 half end style end subscript space space equals space 3 space cross times space 14 space equals space 42 space straight S$

66. પ્રથમ ક્રમની પ્રક્રિયા માટે

$straight t space equals space fraction numerator 2.303 over denominator straight K end fraction log fraction numerator straight a over denominator straight a plus space straight x end fraction$
$straight K space equals space fraction numerator 2.303 over denominator straight t end fraction log fraction numerator left square bracket straight A right square bracket over denominator left square bracket straight A right square bracket subscript 0 end fraction$
$left square bracket straight A right square bracket space equals space left square bracket straight A right square bracket subscript 0 times space straight e to the power of negative straight K times straight t end exponent$
$straight t space equals space straight K space cross times space 2.303 space log space fraction numerator left square bracket straight A right square bracket over denominator left square bracket straight A right square bracket subscript 0 end fraction$