A generic solid, X, has a molar mass of 80.4 g/mol. In a constant-pressure calorimeter, 16.0...

A generic solid, X, has a molar mass of 80.4 g/mol. In a constant-pressure calorimeter, 16.0 g of X is dissolved in 337 g of water at 23.00 °C.

The temperature of the resulting solution rises to 28.70 °C. Assume the solution has the same specific heat as water, 4.184 J/(g·°C), and that there\'s negligible heat loss to the surroundings. How much heat was absorbed by the solution?

how much heat was absoped

waht is the enthrapy

Expert Solution

total mass of mixture = 337+16 = 353 g

initial temperature = 23 c

final temperature = 28.7 c

DT = 28.7 -23 = 5.7

heat released in the process (q) = m*s*DT

= 353*4.184*5.7

= 8.42 joule

no of mole of solid = 16/80.4 = 0.2 mole

DHsol = q/n = 8.42/0.2 = 42.1 kj/mol

queen_honey_blossom answered 1 year ago

A generic solid, X, has a molar mass of 66.0 g/mol. In a constant-pressure calorimeter, 29.5...

A generic solid, X, has a molar mass of 66.0 g/mol. In a constant-pressure calorimeter, 29.5 g of X is dissolved in 299 g of water at 23.00 °C. X(s) -----> X(aq) The temperature of the resulting solution rises to 25.70 °C. Assume the solution has the same specific heat as water, 4.184 J/(g·°C), and that there\'s negligible heat loss to the surroundings. How much heat was absorbed by the solution? =_____kJ What is the enthalpy of the reaction? deltaHrxn=...

Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 15.7 g...

Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 15.7 g of KNO3 is dissolved in 351 g of water at 23.00 °C.The temperature of the resulting solution decreases to 19.80 °C. KNO3(s)+H2O(aq)>KOH(aq)KNO3(aq) Assume the resulting solution has the same specific heat as water, 4.184 J/(g·°C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? and what is the enthalpy of the reaction?

Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure calorimeter, 44.644.6 g...

Potassium nitrate, KNO3KNO3, has a molar mass of 101.1101.1 g/mol. In a constant-pressure calorimeter, 44.644.6 g of KNO3KNO3 is dissolved in 201201 g of water at 23.00 °C23.00 °C. KNO3(s)H2O−−→K+(aq)+NO−3(aq)KNO3(s)→H2OK+(aq)+NO3−(aq) The temperature of the resulting solution decreases to 17.70 °C17.70 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g⋅°C)4.184 J/(g·°C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? What is the enthalpy of the...

13. a) A generic salt, AB, has a molar mass of 321 g/mol and a solubility...

13. a) A generic salt, AB, has a molar mass of 321 g/mol and a solubility of 8.80 g/L at 25 °C. What is the Ksp of this salt at 25 °C? b) The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the molar solubility of this compound. c) Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 9.73? The Ksp of Fe(OH)2 is 4.87×10-17. d) What concentration of SO32– is...

A generic salt, AB3, has a molar mass of 185 g/mol and a solubility of 5.50 g/L at 25 °C.

Part A)A generic salt, AB3, has a molar mass of 185 g/mol and a solubility of 5.50 g/L at 25 °C. AB3(s) ⇌ A3+ (aq) + 3B-(aq) What is the Ksp of this salt at 25 °C?Part B)A generic salt, AB2, has a molar mass of 271 g/mol and a solubility of 2.30 g/L at 25 °C. AB2(s) ⇌ A2+(aq) + 2B- (aq) What is the Ksp of this salt at 25 °C? Part C)At 25 °C only 0.0890 mol of the generic salt AB3 is...

A 0.5065 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and...

A 0.5065 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO3, producing the precipitates La(IO3)3(s) and Ce(IO3)3(s). For the complete titration of both La3 and Ce3 , 44.81 mL of 0.1252 M KIO3 was required. Calculate the mass fraction of La and Ce in the sample.

A 0.5072 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and...

A 0.5072 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO3, producing the precipitates La(IO3)3(s) and Ce(IO3)3(s). For the complete titration of both La3 and Ce3 , 44.01 mL of 0.1289 M KIO3 was required. Calculate the mass fraction of La and Ce in the sample.

A 0.5070 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and...

A 0.5070 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO3, producing the precipitates La(IO3)3 and Ce(IO3)3. For the complete titration of both La3+ and Ce3+, 42.10 mL of 0.1204 M KIO3 was required. Calculate the mass fraction of La and Ce in the sample. mass fraction La: g Lag sample mass fraction Ce: g Ceg sample

A 0.5206 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and...

A 0.5206 g solid sample containing a mixture of LaCl3 (molar mass = 245.26 g/mol) and Ce(NO3)3 (molar mass = 326.13 g/mol) was dissolved in water. The solution was titrated with KIO3, producing the precipitates La(IO3)3(s) and Ce(IO3)3(s). For the complete titration of both La3 and Ce3 , 43.38 mL of 0.1236 M KIO3 was required. Calculate the mass fraction of La and Ce in the sample.

Chem Question - Gases Molar Mass N = 14.01 g/mol Molar Mass H2O = 18.016 g/mol...

Chem Question - Gases Molar Mass N = 14.01 g/mol Molar Mass H2O = 18.016 g/mol Vapor Pressure of Water at 25 C is 23.76 torr Vapor Pressure of Water at 65 C is 187.54 torr (Show all work and calculations, include units in answer. If calculations must be used in several parts, rounding should be made to 6 decimal points to ensure accuracy. Final Answers can be rounded to 3 decimal points.) A syringe filled with air can be...

Question