Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) 0.5 g of fuming `H_2SO_4` (oleum) is diluted with water. This solution is completely neutralized by 26.7 ml of 0.4 N NaOH. The percentage of free `SO_3` in the sample is - Sarthaks eConnect

0.5 g of fuming `H_2SO_4` (oleum) is diluted with water. This solution is completely neutralized by 26.7 ml of 0.4 N NaOH. The percentage of free `SO_3` in the sample is

30.6%

40.6%

20.6%

50%

Solution

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Best answer

% of `SO_3=(0.103)/0.5xx100=20.6%`