Physical Chemistry Answers

Unknown concentration of 100.0 mL diprotic acid is titrated against 1.0 M NaOH. The initial burette reading was 1.3 ml, and the final burette reading during the end point was 19.6 ml. What is the concentration of the acid?

100g of an unknown metal at 150°C was dropped into a bucket containing 50g of water initially at 21°C.The final temperature of the mixture was 32°C. What is the specific heat capacity of the unknown metal?

A 100g sample of Aluminum ( C= 0.90J/gC)at 120°C and a 150g sample of Iron metal (C=0.45J/C)at 90°C were placed in a container of 80g of water at 15°C. What is the final temperature of the mixture?

300g of an unknown metal at 200°C was placed in a 50g Aluminium pot (C =4.184J/gC ) at 21°C.The final temperature of the mixture was 29°C. What is the specific heat capacity of the metal?

50ml of water at 20°C was mixed with 100ml of water at 90°C.The density of water is about 1g/ml. Determine the final temperature after mixing the two samples of water?

30g of NaOH was dissolved in enough water to produce a 125ml solution.The temperature increased from 22°C to 79°C.The density of the solution is 10g/ml.The specific heat capacity of the solution is 4.18J/gC.What is the enthalpy change for the dissolution of NaOH?

A sample of K2CO3 weighing 27.6g was treated by a series of reagents so as to convert all of its carbon to potassium zinc ferrocyanide [also known as dipotassium trizinc hexacyanoferrate(II)] K2Zn3[Fe(CN)6]2. How many grams of the product were obtained?

 A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 127 J of heat from the surroundings. Calculate the change in energy of the gas?.

Calculate Vr, Hr, and Sr for the following using appropriate generalized correlation:

Pure Sulfur dioxide at 450 K and 35 bar

Estimate VR, HR, and SR for one of the following by suitable generalized correlations: