The overall equation for the reaction between sodium carbonate solution and dilute hydrochloric acid is `Na_(2)CO_(3)(aq.)+2HCl(aq.)rarrNaCl(aq)+CO_(2)(g)H_(2)O(l)` If you had the two solutions of the same concentration, you would have to use double volume of HCl to reach the equivalence point. Indicators change their colours at the end point of the reaction and hence we are able to know the end points (equivalence points of reactions). How many ml of 1N HCl are required for X milimoles of `Na_(2)CO_(3)` with methyl orange indicatorA. X mlB. 2 X mlC. 3 X mlD. 4 X ml

The overall equation for the reaction between sodium carbonate solutio

1.	The overall equation for the reaction between sodium carbonate solution and dilute hydrochloric acid is `Na_(2)CO_(3)(aq.)+2HCl(aq.)rarrNaCl(aq)+CO_(2)(g)H_(2)O(l)` If you had the two solutions of the same concentration, you would have to use double volume of HCl to reach the equivalence point. Indicators change their colours at the end point of the reaction and hence we are able to know the end points (equivalence points of reactions). How many ml of 1N HCl are required for X milimoles of `Na_(2)CO_(3)` with methyl orange indicatorA. X mlB. 2 X mlC. 3 X mlD. 4 X ml
Answer» Correct Answer - B In presence of MeOH indicator, velence factor of `Na_(2)CO_(3)=2` Equivalent of HCl = Equivalent of `Na_(2)CO_(3)` NV=mole `xx`V.F 1 V `=x xx10^(-3)xx2` `V=2x xx10^(-3)L=2x ml`

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