Physical Chemistry Answers

Which among the following is expected to have
the highest surface tension at room
temperature : water, methyl cyanide or
methanol ? State the reason also.

write the expression for the instantaneous rate of the following reaction in term of changes in concentration of O3 or O2 : 2 O3 (g) - 3 O2 (g)

A 150 pound person needs an antibiotic injection with a dosage of 10 mg/kg of body mass. The antibiotic is labeled with a concentration of 1 gram/mL. How many mL of antibiotic sould this person receive?

If the caffeine concentration in a particular brand of soda is 1.95 mg/oz,
drinking how many cans of soda would be lethal? Assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.

Explain why an aqueous solution of NH4CL is
acidic in nature.

Write the equation for the phase rule.

Identify the type of thermodynamic system in
each of the following cases :
(i) A sealed bottle of flavoured milk
(ii) Ice in a closed thermos flask

Name the crystal system whose unit cell has the
following characteristics :
a ≠ b ≠ c and α = γ = 90°, β ≠ 90°

State Graham's law of effusion of gases.

What is the S.I. unit of temperature ?