Physical Chemistry Answers

Calculate the voltage generated in the following cell Mn|Mn2+||Fe2+|Fe when iron rod is immersed in 1.0 M FeSO4 solution and Mn rod is immersed in 0.1 M MnSO4 solution. Given E0Fe2+/Fe = -0.40 V and E0Mn2+/Mn = -1.18 V. Write the cell representation and reactions.

How much energy (in kilojoules) is needed to heat 5.40 g of ice from -14.0 ∘C to 31.0 ∘C? The heat of fusion of water is 6.01kJ/mol, and the molar heat capacity is 36.6 J/(K⋅mol) for ice and 75.3 J/(K⋅mol) for liquid water.

If the caffeine concentration in a particular brand of soda is 3.41 mg/oz, drinking how many cans of soda would be lethal? Assume 10.0 grams of caffeine is a lethal dose, and there are 12 oz in a can.
Expert's answer

A balloon blown up has volume of 500ml at 5°C balloon is distended to 7/8th of its maximum capacity 1) will it burst at 30°C. 2) calculate the minimum temperature above. Which it will burst

Addition of NH4C1 to an aqueous solution of
NH4OH results in a decrease of pH. Explain.

State the principle of corresponding states.

Give one example each of chemical reactions
undergoing homogeneous catalysis and
heterogeneous catalysis.

Identify the intensive and extensive variables
from among the following :
(i) Temperature of a body
(ii) Number of moles present in a substance
(iii) Quantity of cooking gas burnt for boiling
milk
(iv) Specific heat

Differentiate between intrinsic and extrinsic
semiconductors in terms of the origin of
conductivity in them.