Equilibrium Question 828

Question: What would be the pH of a solution obtained by mixing 5g of acetic acid and 7.5g of sodium acetate and making the volume equal to 500 mL- (Ka=1.75×105,pKa=4.76)

Options:

A) pH=4.70

B) pH < 4.70

C) pH of solution will be equal to pH of acetic acid

D) 4.76 < pH < 5.0

Show Answer

Answer:

Correct Answer: D

Solution:

pH=pKa+log[salt][acid]

=4.76+log7.51005500=4.7+log1.5=4.87 Hence correct answer is 4.76<pH<5.0



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक