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How many mg/L of magnesium ion will remain in solution in water that has a hydroxide concentration of 2.071E-3 M at 25°C? Respond with 3 significant digits. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 105)

How many mg/L of magnesium ion will remain in solution in water that has a hydroxide concentration of 2.071E-3 M at 25°C? Respond with 3 significant digits. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 105)

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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~ How many mg/L of magnesium ion will remain in solution in water that has a hydroxide concentration of 2.071E-3 M at 25°C? Respond with 3 significant digits. Question 1 Homework Unanswered. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 105) Type your numeric answer and submit Unanswered 3 attempts left Question 2 Homework Unanswered Submit M A groundwater sample contains 2.000 mg/L of iron as Fe³+. What pH is required to precipitate all but 0.243 mg/L of the iron at 25°C? Respond with 2 decimal places.. Type your numeric answer and submit n
Transcribed Image Text:~ How many mg/L of magnesium ion will remain in solution in water that has a hydroxide concentration of 2.071E-3 M at 25°C? Respond with 3 significant digits. Question 1 Homework Unanswered. Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 105) Type your numeric answer and submit Unanswered 3 attempts left Question 2 Homework Unanswered Submit M A groundwater sample contains 2.000 mg/L of iron as Fe³+. What pH is required to precipitate all but 0.243 mg/L of the iron at 25°C? Respond with 2 decimal places.. Type your numeric answer and submit n
Question 3 Homework Unanswered + Determine the pH that must be achieved to produce a concentration of 0.243 mg/L of copper if the starting concentration is 2.00 mg/L. Respond with 2 decimal places. Type your numeric answer and submit Unanswered 3 attempts left Question 4 Homework Unanswered Submit Calculate the pH of a water at 25°C that contains 0.579 mg/L of carbonic acid. Assume that [H+] = [HCO3-] at equilibrium and neglect the dissociation of water. Round your answer to 3 decimal places. Type your numeric answer and submit
Transcribed Image Text:Question 3 Homework Unanswered + Determine the pH that must be achieved to produce a concentration of 0.243 mg/L of copper if the starting concentration is 2.00 mg/L. Respond with 2 decimal places. Type your numeric answer and submit Unanswered 3 attempts left Question 4 Homework Unanswered Submit Calculate the pH of a water at 25°C that contains 0.579 mg/L of carbonic acid. Assume that [H+] = [HCO3-] at equilibrium and neglect the dissociation of water. Round your answer to 3 decimal places. Type your numeric answer and submit
Expert Solution
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We’ll answer the first question since the exact one wasn’t specified. Please submit a new question specifying the one you’d like answered.

1.

Given that-

Hydroxide concentration [OH-]=2.07 x 10-3 M=0.00207 M

Temperature, T= 250C

Here, the solution has 0.00207 moles of hydroxide ion in 1 liter of solution.

The reaction of magnesium ion with hydroxide ion is as follows-

Mg2++2OH-→Mg(OH)2 

The solubility product is-

Ksp=[Mg2+][OH-]2

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