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Chapter 15: Q108 E (page 878)

Magnesium hydroxide and magnesium citrate function as mild laxatives when they reach the small intestine. Why do magnesium hydroxide and magnesium citrate, two very different substances, have the same effect in your small intestine. (Hint: The contents of the small intestine are basic.)

Short Answer

Expert verified

Both salts are basic and final form of both salt is the same (Mg(OH)2)

Step by step solution

01

Define the Basic nature of salt 

Basic salt formed by the partial neutralization of a strong base by a weak acid is known as a basic salt. They hydrolyze to form a basic solution.

Precipitation of Ag+, will begin when the ion product value is higher than the solubility product constant value of Ag2CO3

02

 Step 2: Determining for Magnesium hydroxide

The contents of the small intestine are basic

For Magnesium hydroxide

Mg (OH)2 ⇌ Mg2+ + 2OH-

Since OH-is a strong baseMg (OH)2 is basic salt

For Magnesium citrate

Mg3(C6 H5 O7)2⇌ 3Mg2+ +2 C6 H5 O73-

03

Determining for the Magnesium citrate

When citric acid reacts with water

C6 H5 O73-+ 3H2 O ⇌ H3 C6 H5 O7 + 3OH-

Therefore, both salts are basic and final form of both salt is the same (Mg (OH)2)

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Most popular questions from this chapter

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Question: The calcium ions in human blood serum are necessary for coagulation (Figure 15.5). Potassium oxalate, \({K_2}{C_2}{O_4}\), is used as an anticoagulant when a blood sample is drawn for laboratory tests because it removes the calcium as a precipitate of\(Ca{C_2}{O_4} \times {H_2}O\). It is necessary to remove all but 1.0% of the \(C{a^{2 + }}\) in serum in order to prevent coagulation. If normal blood serum with a buffered pH of 7.40 contains 9.5 mg of \(C{a^{2 + }}\) per 100 mL of serum, what mass of \({K_2}{C_2}{O_4}\)is required to prevent the coagulation of a 10 mL blood sample that is 55% serum by volume? (All volumes are accurate to two significant figures. Note that the volume of serum in a 10-mL blood sample is 5.5 mL. Assume that the \({K_{sp}}\)value for \(Ca{C_2}{O_4}\)in serum is the same as in water.)

A volume of \(50mL\) of \(1.8MN{H_3}\)is mixed with an equal volume of a solution containing\(0.95g\;of\;MgC{l_2}\). What mass of \(N{H_4}Cl\)must be added to the resulting solution to prevent the precipitation of \(Mg{(OH)_2}?\)
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