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Author Question: Calculate the minimum concentration of Mg2+ that must be added to 0.10 M NaF in order to initiate a ... (Read 40 times)

Caileynorton

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Question 1

Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium(III) fluoride. (For CrF3 , Ksp = 6.6 × 10–11.)
◦ 0.023 M
◦ 0.032 M
◦ 7.7 × 10–8 M
◦ 2.9 × 10–9 M
◦ 6.9 × 10–10 M

Question 2

Calculate the minimum concentration of Mg2+ that must be added to 0.10 M NaF in order to initiate a precipitate of magnesium fluoride.  (For MgF2 , Ksp = 6.9 × 10–9.)
◦ 1.4 × 107 M
◦ 6.9 × 10–9 M
◦ 6.9 × 10–8 M
◦ 1.7 × 10–7 M
◦ 6.9 × 10–7 M


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Marked as best answer by Caileynorton on Nov 5, 2023

rika06@comcast.net

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Caileynorton

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Reply 2 on: Nov 5, 2023
Wow, this really help


xiazhe

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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