CBSE Class 12-science Answered

Please solve the question.

Asked by apratimdutta.2003 | 21 Oct, 2020, 05:38: PM

Expert Answer

When HCl reaccts with NaOH, This reaction is known as neutralisation.

HCl plus NaOH rightwards arrow NaCl space plus space straight H subscript 2 straight O

t=0

N subscript 1 V subscript 1 space equals N subscript 2 V subscript 2 fraction numerator 500 cross times 0.1 over denominator 1000 end fraction equals fraction numerator 200 cross times 0.2 over denominator 1000 end fraction equals 0.05 equals 0.04 space S o space o n l y space 0.04 space m o l e s space o f space H C l space c a n space b e space n e u t r a l i s e d. d u r i n g space n e u t r a l i s a t i o n space o f space 1 space m o l e space o f space N a O H space b y space 1 space m o l e space o f space H C l comma space h e a t space e v o l v e d space equals 57.3 space K J T o space n e u t r a l i s e space 0.04 space m o l e s space o f space N a O H comma space h e a t space e v o l v e d equals 57.3 cross times 0.04 equals 2.292 space K J

Answered by Ravi | 24 Oct, 2020, 12:29: PM

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