What volume of 10%(w/v) solution of Na2CO3 will be required to neutralise 100 ml of HCl solution containing 3.65g of HCl.

Asked by Gurinder | 9th Apr, 2017, 02:04: PM

Expert Answer:

2 H C l space plus space N a subscript 2 C O subscript 3 space rightwards arrow space H subscript 2 C O subscript 3 space plus space 2 N a C l
2 space v space space space space space space space space space 1 space v space space space space space space space space space
2 space m o l e s space space space 1 space m o l

36 space.5 space g space H C l space i n space 1000 space m L space equals space 1 space m o l a r space H C l
S o comma space 3.65 space g space H C l space i n space 100 space m L space equals space 1 space m o l a r space H C l space s o l u t i o n space i s space g i v e n.

105.99 space g space N a subscript 2 C O subscript 3 space i n space 1000 space m L space equals space 1 space m o l a r space N a subscript 2 C O subscript 3 space
S o comma space 10 space g space N a subscript 2 C O subscript 3 space i n space 1000 space m L space equals space 0.094 space m o l a r space N a subscript 2 C O subscript 3
T h u s comma space 10 space g space N a subscript 2 C O subscript 3 space i n space 100 space m L space equals space 0.94 space m o l a r space N a subscript 2 C O subscript 3
N o w comma space f r o m space t h e space c h e m i c a l space e q u a t i o n comma space 100 space m L space o f space 1 space m o l a r space H C l space r e q u i r e s space 100 space m L space 0.5 space m o l a r space N a subscript 2 C O subscript 3
S o comma space 0.94 space M space N a subscript 2 C O subscript 3
100 space x space 0.5 space equals space y space x space 0.94 space
y space equals space 53.19 space m L space N a subscript 2 C O subscript 3
space space

space

Answered by Prachi Sawant | 10th Apr, 2017, 11:32: AM