A gas which has a volume of 3.0990 L with a pressure of 2.50 atm at 41 °C is cooled to a temperature of 25 °C and the volume is reduced to 1850 mL, what would be the new pressure in mmHg?

a. 3020 mmHg
b.4.18 mmHg
c. 3.97 mmHg
d. 3017 mmHg

108

explanation:

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c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.