Physical Chemistry Answers

What volume of 0.10NH2 SO3 will be required to neutralize a solution containing 10.0grams of Ca(OH)2?

0.200grams of pure Na2CO3 requires 35.5ml of vinegar for titration. Calculate the normality of vinegar.

A 1.0000 grams of ultrapure silicon was treated with an oxidizing agent and the resulting SiO2 after proper collection and drying, weighed 2.1387gram. Calculate the % Si in the sample.

1a)Calculate the pressure exerted by 1 mole of methane in a 250ml container at 300k using vanderwaal's equation

1b) what pressure will be predicted by ideal gas equation

a=2.253L^2atm/mol^2

b=0.0428L/mol

R=0.0821Latm/mol/k

Explain the derivation of real gas using vanderwaal's explanation ( mathematically)

When 1.75 g of CaCl2 dissolves in 125 g of water in a coffee-cup calorimeter, the temperature increases by 2.44°C. What is the heat change per mole of CaCl2 dissolved in water? Assume that all the heat is absorbed by the water (c = 4.18 J/g×°C).

What is the oxidation number of Fe²⁺ion?

What is the oxidation number of chlorine in Cl₂?

10ml of Hydrochloric acid solution of pH=1 is mixed with 40ml of a hydrochloric acid solution of pH=4. The pH of the mixture is?