The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol) in water. He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The temperature drop was 3.5 K. What is qH2O? What is qrxn? What is ΔHrxn?

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A: Molar mass of CH3OH = 32.042 g/mol  Formula used :  Mass of CH3OH = Number of moles of CH3OH X Molar…

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Q: Calculate the energy required to heat 1.80 kg of mercury from -5.8 °C to 5.2 °C. Assume the specific…

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A: In thermodynamics, temperature, heat, and energy changes are observed for every reaction. When heat…

Q: A 5.6 g sample of ethanol (C2H5OH)was combusted in a bomb calorimeter. If the temperature rose from…

A: Enthalpy of combustion: The amount of energy released when one mole of a combustible substance is…

Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

A:

Q: In the following experiment, a coffee-cup calorimeter containing 100 mLmL of H2OH2O is used. The…

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Q: A 25.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 25.0 mL sample of 0.5 M NaCl(aq) in a…

A: Enthalpy of reaction ∆Hrxn is calculated below.

Q: When 15.3 g of sodium nitrate, NaNO3, was dissolved in water in a constant-pressure calorimeter, the…

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Q: A 25.0 mL sample of 0.5 M AgNO3(aq) is mixed with a 25.0 mL sample of 0.5 M NaCl(aq) in a…

A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…

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Q: Octane (C8H18) undergoes combustion according to the following thermochemical equation.…

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Q: When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

A: Given: Heat energy produced due combustion of methanol = -515 KJ ΔH = -764 KJ/mol Molar mass of…

Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

A: The mass of KNO3 and water are given to be 10 g and 250 g respectively. The specific heat capacity…

Q: When 10.6 g NaOH dissolves in 232 g of water in a coffee-cup calorimeter, ΔH = −42.6 kJ/mol. The…

A: To calculate the final temperature of a solution of sodium chloride in water.

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 0.55 kg sample…

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Q: The reaction of iron with oxygen is a common occurrence. You can observe the resulting rust on…

A: Recall the given equation,                     4 Fe s  +  3 O2 g  →  2 Fe2O3 s…

Q: When a 4.456-g sample of margarine is burned with excess oxygen in a bomb calorimeter with a heat…

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Q: When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is…

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Q: CH3OH(g)+32O2(g)⟶CO2(g)+2H2O(l)Δ?=−764 kJ   How much methanol, in grams, must be burned to produce…

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Q: Nagyung wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol)…

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Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

A: In bomb calorimetry volume is kept constant and we can calibrate the change in heat in a calorimetry…

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Q: Consider the thermochemical equation for the combustion of acetone (C3H6O), the main ingredient in…

A: Recall the given reaction,                              C3H6O l + 4 O2 g → 3 CO2 g + 3 H2O g…

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A: