NEET Class neet Answered
Q128
Ans1
Asked by manasvijha | 24 Apr, 2019, 09:23: AM
Expert Answer
Option (1) is correct.
Given:
Volume of NaOH = 20 ml
Molaity of NaOH = 0.1 M
Volume of CH3COOH = 30 ml
Molarity of CH3COOH = 0.2 M
CH3COOH + NaOH → CH3COONa + H2O
20 ml of 0.1 M NaOH contains 2 milli moles of NaOH
30 ml of 0.2 M CH3COOH contains 6 milli mole of CH3COOH
CH3COOH left unreacted = 6-2 = 4 millimole
CH3COONa formed = 2 milli mole
Volume of solution = 50 ml
The pH of the resulting solution will be 4.44
Answered by Varsha | 24 Apr, 2019, 02:36: PM
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