# Chemistry

Knowing the milk of magnesia contains 8 g% of Mg (OH) 2, we used 1 g milk of magnesia and added 50 mL of 0.100 M HCl, determine the volumeainda of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M

1. 👍 0
2. 👎 0
3. 👁 111
1. Given 1gm of MM contains 8% Mg(OH)2 (f.wt. = 58.33 g/mol)

Gms Mg(OH)2
= 8% of 1gm MM = 0.08gms Mg(OH)2
= 0.00137mol Mg(OH)2

Mg(OH)2 in solution => 2moles OH^-
Moles OH^- = 2(0.00137)mole OH^-
= 0.00274mole OH^-

Adding 50ml of 0.100M HCl
=> 0.005mole HCl + 0.00274 mole OH^-
=>(0.0050 - 0.00274)mole excess(H^+)
=> 0.0023mole excess (H^+)
=> (0.0023/0.050)M H^+
=> 0.045M in excess H^+

Titrating 50ml of 0.045M H^+ with 0.105M NaOH
=>(M x V)acid = (M x V)base
=>(0.045M)(50ml)=(0.105M)(Vol Base)
=> Vol Base = (0.045M)(50ml)/(0.105M)
=> Vol Base = 21.4ml of 0.105M NaOH

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Chemistry

Knowing that the milk of magnesia contains 8 g% of Mg (OH)2, using 1 g of milk of magnesia and added 50 mL of 0.100 M HCl, determine the required volume of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M.

asked by Monica on April 25, 2016
2. ### Chemistry

Knowing that the milk of magnesia contains 8 g% of Mg (OH)2, using 1 g of milk of magnesia and added 50 mL of 0.100 M HCl, determine the required volume of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M.

asked by Kelly on April 25, 2016
3. ### science

Are the following substances acid, base, or neutral: sodium bicarbonate (pH = 8.3): Blood (pH = 7.4): milk (pH =6.7): orange juice (pH = 3.6): milk of magnesia (pH = 10.5): How do you come up with the answers?

asked by long on March 12, 2012
4. ### Science

Milk of magnesia has the chemical formula Mg(OH)2. what is the mass of 3.2 moles of milk of magnesia? The molar mass of magnesium is 24.3 grams per mole. The molar mass of hydrogen is 1.0 grams per mole. The molar mass of oxygen

asked by the world forgot on November 6, 2017
5. ### science

what is something that has the same pH as milk of magnesia?

asked by Anonymous on September 5, 2007
6. ### Chemistry

Why can't milk of magnesia (Mg(OH)2), act as a buffer?

asked by Michelle on April 2, 2015
7. ### Chemistry

Calculate the OH- of each aqueous solution aspirin, 5.9×10−4 M milk of magnesia, 1.5×10−9 M

asked by Angela on June 7, 2010
8. ### biology

which of the following has a basic ph lemon juice milk of magnesia tomatoes hydrochloric acid

asked by brenda on August 28, 2009
9. ### Chemistry

Magnesium hydroxide, Mg(OH)2, found in milk of magnesia, has a solubility of 7.05 × 10-3 g L-1 at 25 °C. Calculate Ksp for Mg(OH)2.

asked by Anonymous on March 4, 2015
10. ### Chemistry

Classify these mixtures as colloids, suspensions, or true solutions. fog, milk of magnesia, mayonnaise, blood, table salt in water, dust-free air I got fog, milk of magnesia, mayonnaise for colloids. Blood for suspensions. Table

asked by Anon on January 29, 2013

More Similar Questions