davg6547 davg6547

29-10-2022
Chemistry

Answered

A 71.0 mL sample of 1.0 M NaOH is mixed with 42.0 mL of 1.0 M H2SO4 in a large Styrofoam coffee cup; the cup is fitted with a lid through which passes a calibrated thermometer. The temperature of each solution before mixing is 19.1°C. After adding the NaOH solution to the coffee cup, the mixed solutions are stirred until reaction is complete. Assume that the density of the mixed solutions is 1.0 g/mL, that the specific heat of the mixed solutions is 4.18 J/(g •°C), and that no heat is lost to the surroundings. The ΔΗrxn for the neutralization of NaOH with H2SO4 is –114 kJ/mol H2SO4.

What is the maximum temperature in the cup?

Answer :

Other Questions

A 82.5 g copper bar was heated to 221.32 oC and placed in a coffee cup calorimeter containing 323.7 mL of water at 22.55oC. The final temperature of the water w

9a. Wanda put 35 mL of water into a graduated cylinder. After adding a solid object, the water level in the cylinder rose to 55 mL. What is the volume of the ob

The molar concentration of an unknown acid solution with general formula HjA is to be determined by titration with a 0.76 M KOH solution. Determine the molar co

A gas sample has a temperature of 23 ∘C with an unknown volume. The same gas has a volume of 454 mL when the temperature is 84 ∘C, with no change in the pressur

13. Three containers each contain water at the same temperature. Which container has the most thermal energy? a) 5 ml of water in a metal container b) 10 ml of

4. Which solution is more concentrated? Solution "A" contains 50.0 g of CaCO3 in 250.0 mL solution. Solution"B" contains 6.0 moles of H₂SO4 in 2.0 L of solution

What is the temperature change of an 36-gram sample of water that had absorbed 695 Joules of heat? C = 4.18 J/g K

Answer the question 1.You have 3 moles of NaOH. How many particles are present?

2. Calculate the enthalpy change to be expected for the reaction NaCl(s) --> NaCl(aq). Use Hess's law, an enthalpy change that was measured in this experim

Reactive metals such as magnesium react readily with acids in aqueous solution. 1.95 g of mg is added to 85.2 ml of a 1.00 m aqueous solution of hcl, producing