Answer to Question #77491 in General Chemistry for Jo

Question

How many grams of solid BaSO4 will form when Na2SO4 reacts with 25mL of 0.50 M Ba(NO3)2?
_Ba(NO3)2 + _Na2SO4 ---> _ BaSO4 + _ NaNO3

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Answer 1

Answer:
1) Balance the reaction equation
Ba(NO3)2 + Na2SO4 ---> BaSO4 + 2 NaNO3
2) Calculate number of moles of Ba(NO3)2 = 0.50 moles/L x 0.025 L = 0.0125 moles
3) Using stoichiometry calculate number of moles of BaSO4 =0.0125 moles
4) Calculate mass of BaSO4 = 0.0125 moles x 233.4 g/mole = 2.92 g BaSO4