Question

1. Which of the following do not represent standard state conditions: (i) 273 K (ii) 1 bar pressure (iii) Pure state of the substance (iv) 25°C.​

Answer 1

Answer:

iii) pure state of substance

Answer 2

(i) 273 K and (ii) 1 Bar does not represent standard state conditions.

• Standard state condition is represented by 1 atm or atmospheric pressure.
• Atm and Bar, both are units of atmospheric pressure.
• Other than listed options of 25°C and pure state of substance, concentration of 1 M or 1 Molarity for solutions also specifies standard state conditions.
• Standard state conditions are used as reference points to ease the comparison between different properties at different conditions.