A solution of Na_(2)S_(2)O_(3) is standardized iodometrically against 0.1262 g of KBrO_(3). This process required 45 mL of the Na_(2)S_(2)O_(3) solution. What is the strength of the Na_(2)S_(2)O_(3)? (K = 39, Br = 80)

A solution of Na_(2)S_(2)O_(3) is standardized iodometrically against

1.	A solution of Na_(2)S_(2)O_(3) is standardized iodometrically against 0.1262 g of KBrO_(3). This process required 45 mL of the Na_(2)S_(2)O_(3) solution. What is the strength of the Na_(2)S_(2)O_(3)? (K = 39, Br = 80)
Answer» `0.2M` `0.1M` `0.05M` `0.1N` Solution :M.eq. `Na_(2)S_(2)O_(3)` = M.eq `I_(2)` `45xxMxx1=nxx2impliesn=(45M)/(2)...(1)` M.eq `I_(2)` = M.eq `KBrO_(3)` `nxx2=6xx(0.1262)/(167)xx1000` `impliesn=(3xx0.1262xx1000)/(167)...(2)` From (1) & (2), `(45M)/(2)=(126.2xx3)/(167)impliesM=0.1`