Recall the 0.1 M NaOH you just titrated was made from 1 m NaOH (\"mother solutio
ID: 484655 • Letter: R
Question
Recall the 0.1 M NaOH you just titrated was made from 1 m NaOH ("mother solution"). If the new accurate concentration determined by titration today is 0.01 M, what is the actual concentration of the "mother solution"? 1.00 M 1.11 M 0.909 M 1.111 M when you have reached the endpoint. The buret reading is the volume of titrate HCI that has been delivered. If you started with the meniscus at 1.23 mL and at the endpoint the meniscus is at 15.53 mL, then you have delivered 14.30 mL of solution. True false the endpoint for (or equivalence point) for your acid/base titration between HCI and NaOH occurred when:Explanation / Answer
Answer: The actual concentration of mother liquor is 1.11M
Significant figures in 0.111M is 3, so, the significant figure in actual concentration should be 3 i.e. 1.11 M.
Answer 9: true statement (15.53-1.23=14.30 mL)
1.23 is considered as 0.00 point
Answer 10: All of the above i.e.the phenolphthalein indicator changed colour (colourless to pink), the acid and base neutralized each other completely and the moles of H+ ions are equal to the OH- ions
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