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Jaiyush19
Jaiyush19
@jaiyush19
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Joined: Sep 10, 2021
Last seen: Jul 13, 2023
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Topics: 2159 / Replies: 16
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Topic
How many molecules of ATP, undergo hydrolysis to raise the temperature of 180 kg of water which was originally at room temperature by 1°C? C{P,m} water = 75.32 J/mol/K, ΔH{P} for ATP hydrolysis = 7 kcal/mol
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 259
Topic
What is the amount of heat (in Joules) absorbed by 18 g of water initially at room temperature heated to 100°C? If 10 g of Cu is added to this water, than decrease in temperature (in Kelvin) of water was found to be?
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 409
Topic
Diborane is a potential rocket fuel which undergoes combustion according to the equation B2H6(g) + 3O2(s) → B2O3(s) + 3H2O(g) Calculate the enthalpy change for the combustion of diborane. Given
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 312
Topic
For complete combustion of ethanol, C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), the amount of heat produced as measured in bomb calorimeter, is 1364.47 kJ mol^-1 at 25ºC. Assuming ideality the enthalpy of combustion
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 174
Topic
ΔG in Ag2O → 2Ag + 1/2O2 at a certain temperature is -10 kJ mol^-1. Pick the correct statement
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 241
Topic
Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -382.64 kJ mol-1 and -45.6 JK^-1 mol^-1, respectively.
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 310
Topic
Standard enthalpy of combustion of CH4 is -890 kJ mol^-1 and standard enthalpy of vaporisation of water is 40.5 kJ mol^-1. The enthalpy change of the reaction
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 132
Topic
The lattice energy of solid NaCl is 180 kcal mol^-1 and enthalpy of solution is 1 kcal mol^-1. If the hydration energies of Na^+ and Cl^- ions are in the ratio 3 : 2, what is the enthalpy of hydration of sodium ion?
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 210
Topic
When 1 mole of oxalic acid is treated with excess of NaOH in dilute aqueous solution, 106 kJ of heat is liberated. Predict the enthalpy of ionisation of the acid
4 years ago
Forum
Thermodynamics
Replies: 0
Views: 150
Topic
What type of compound is CH3COOH? (b) What substance should be oxidised to prepare CH3COOH? (c) What is the physical state of CH3COOH? (d) State one advantage of soaps over detergents.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 169
Topic
Name the gas evolved when ethanol reacts with sodium. (b) What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of cone. H2SO4?
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 104
Topic
Name the functional group of organic compounds that can be hydrogenated. With the help of a suitable example, explain the process of hydrogenation, mentioning the conditions of the reaction and any one change in physical property with the formation o...
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 275
Topic
What would be observed on adding a 5% alkaline potassium permanganate solution drop by drop to some warm ethanol in a test tube? Write the name of the compound formed during the chemical reaction. Also, write chemical equation of the reaction which t...
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 108
Topic
Give reasons for the following observations : (a) Air holes of a gas burner have to be adjusted when the vessels being heated get blackened by the flame. (b) Use of synthetic detergents causes pollution of water.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 301
Topic
How would you convert: (a) ethanol into ethene? (b) propanol into propanoic acid? Name the process in each case and write the equations of the reactions involved.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 128
Topic
(a) How would you test for an alcohol? (b) Give the harmful effects of drinking alcohol. (c)Explain why, methanol is much more dangerous to drink than ethanol.
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 373
Topic
What happens when propanoic acid is warmed with methanol in the presence of a few drops of concentrated sulphuric acid? Write equation of the reaction involved. (b) What change will you observe if you test soap solution with a litmus paper (red and ...
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 287
Topic
(a) Write the chemical equation of the reaction which takes place during the burning of ethanol in air. (b) Why is ethanol used as a fuel? (c) State two uses of ethanol (other than as a fuel).
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 173
Topic
Which of the following hydrocarbons will give substitution reactions and why? CH4, C3H6, C3H8, C4H6, C5H12, C5H10
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 305
Topic
The process of burning of a hydrocarbon in the presence of air to give CO2, H2O, heat and light is known as……… (b) The sodium salt of a long chain fatty acid is called
4 years ago
Forum
Carbon and Its Compounds
Replies: 0
Views: 276
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