When 800 G of Ba(s)is Added to 100

question 150

Multiple Choice

When 8.00 g of Ba(s) is added to 100.00 g of water in a container open to the atmosphere,the reaction shown below occurs and the temperature of the resulting solution rises from 22.00°C to 77.62°C.If the specific heat of the solution is 4.18 J/(g ∙ °C) ,calculate ΔH for the reaction,as written. Ba(s) + 2 H₂O(l) → Ba(OH) ₂(aq) + H₂(g) ΔH = ?

• A)-431 kJ
• B)-3.14 kJ
• C)3.14 kJ
• D)431 kJ