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Some Basic Concepts Of Chemistry

Question
CBSEENCH11005075

How many grams of barium sulphate are obtained when 26 g of barium chloride reacts with enough sulphuric acid? (Atomic mass of Ba = 137).

Solution
The balanced chemical equation representing the reaction is:
BaCl2 + H2SO4   rightwards arrow     BaSO4downwards arrow + 2HCl
1 mole                       1 mole
137 + (2 x 35.5)           137 + 32 + (4 x 16) 
208 g                                   233 g
26 g                                         ?
Stoichiometry indicates that 208 g BaCl2 gives 233 g BaSO4
         therefore           26 space straight g space BaCl subscript 2 space would space give space
                                          equals 233 over 208 cross times 26 space straight g space BaSO subscript 4
equals space 29.125 space straight g space BaSO subscript 4