25. When 5.35 g of slid sodium hydroxide was dissolved in a calorimeter containing 100 g...
Part A When a 1.78 g sample of solid sodium hydroxide was dissolved in a calorimeter in 60.0 g of water, the temperature rose from 4.2 °C to 40.8 °C . Calculate AH (in kJ/mol NaOH) for the following solution process: NaOH(s)- Na (aq) +OH (aq) Assume that it's a perfect calorimeter and that the specific heat of the solution is the same as that of pure water. ΑΣφ ? kJ/mol
When a 3.11 g sample of solid sodium hydroxide was dissolved in a calorimeter in 130.0 g of water, the temperature rose from 18.9 oC to 31.3 o C . Calculate Δ H (in kJ/mol NaOH ) for the following solution process: NaOH(s)→Na+(aq)+OH−(aq). Assume that it’s a perfect calorimeter and that the specific heat of the solution is the same as that of pure water.
5.55 When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (Figure 5.18), the temperature rises from 21.6 °C to 37.8 °C. Calculate ?? (in kJ/mol NaOH) for the solution process NaOH(s)-Na"(aq) + OH-(aq) Assume that the specific heat of the solution is the same as that of pure water.
please help me with #9 and 10 before 9:30 9. If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 50 g of methanol from 20 °C to 60 °C? 10. When a 3.25 g sample of solid sodium hydroxide was dissolved in a calorimeter in 100.0 g of water, the temperature rose from 23.9 °C to 32.0 °C. Calculate AH (in kJ/mol NaOH) for the following solution process: NaOH(s) —...
When a 7.46-g sample of solid sodium hydroxide dissolves in 36.9 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 24.00 oC to 68.26 oC. Calculate H in kJ/mol NaOH for the solution process. NaOH(s) Na+(aq) + OH-(aq) The specific heat of water is 4.18 J/g-K. Hsolution = . kJ/mol NaOH.
Part A Calculate the final temperature when 35 mL of water at 50 °C are added to 75 mL of water at 45 °C. Assume density of water is 1.00 g/mL and no heat is lost to the calorimeter. IVO AQ o 2 ? Part A If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 12 g of methanol from 26°C to 78°C ? IVO AO + O 2 ?...
Consider the reaction between aqueous sodium hydroxide and silver cation: 2 NaOH (aq) 2 Ag (aq) -AgaO (s) + H2O ()2 Na (aq) a) Given the data in the table below, calculate the standard enthalpy change (in kJ) for the reaction. Compound Ag (aq) Ag O (s) HO () Na (aq) NaOH (aq) AH" (kJ/mol) 100.0 -50.0 - 275.0 -250.0 -475.0 b) When the reaction was performed in a constant pressure calorimeter, it was observed that the temperature of the...
Question 7 (1 mark) Consider the reaction between aqueous sodium hydroxide and silver cation: 2 NaOH (aq) + 2 Ag+ (aq) → Ag20 (s) + H20 (1) + 2 Na+ (aq) a) Given the data in the table below, calculate the standard enthalpy change (in kJ) for the reaction. Compound Ag+ (aq) Ag20 (s) H2O (1) Na+ (aq) NaOH (aq) A/H (kJ/mol) 100.0 - 50.0 - 275.0 - 250.0 -475.0 b) When the reaction was performed in a constant pressure...
The salt sodium perchlorate is soluble in water. When 9.07 g of NaClO4 is dissolved in 103.00 g of water, the temperature of the solution decreases from 25.00 to 22.70 °C. Based on this observation, calculate the enthalpy of dissolution of NaClO4 (in kJ/mol). Assume that the specific heat of the solution is 4.184 J/g °C and that the heat absorbed by the calorimeter is negligible. ΔHdissolution kJ/mol =
a) If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 87 g of methanol from 4 oC to 99 oC ? b When a 3.78 g sample of solid sodium hydroxide was dissolved in a calorimeter in 150.0 g of water, the temperature rose from 14.5 oC to 45.2 oC . Calculate ΔH (in kJ/mol NaOH) for the following solution process: NaOH(s)→Na+(aq)+OH−(aq) Assume that it’s a perfect calorimeter and that the specific heat of...