[scougar]

What is the normality of the solution if we dissolve 4.8 g of
Mg(OH)2 in 250.0 mL of water?

What would be the concentration in molarity of a 1 N H3PO4 solution?

The Ka of formic acid is 1.8x10-4. What is the pH of a buffer system that contains 0.75M formic acid (HCOOH) and 0.60 M sodium formate (NaCOOH)?

What would be the new pH of 1.0-L of the buffer described above after the addition of 0.20 mol of HNO3?

What volume in milliliters of 0.50 M KOH is required to neutralize 50.0 mL of 0.85 M H2SO4?

What is the pH of a 0.8 M KOH solution?

[Borek]

Please read forum rules.

[sjb]

What is the normality of the solution if we dissolve 4.8 g of
Mg(OH)2 in 250.0 mL of water?

Normality with respect to what? Mg²⁺, Cl^-.. ?

What is the definition of normality?

What would be the concentration in molarity of a 1 N H3PO4 solution?

The Ka of formic acid is 1.8x10-4. What is the pH of a buffer system that contains 0.75M formic acid (HCOOH) and 0.60 M sodium formate (NaCOOH)?

What would be the new pH of 1.0-L of the buffer described above after the addition of 0.20 mol of HNO3?

Consider use of the Henderson-Hasselbalch equation ( http://en.wikipedia.org/w/index.php?title=Henderson-Hasselbalch_equation&oldid=203882132 )

What volume in milliliters of 0.50 M KOH is required to neutralize 50.0 mL of 0.85 M H2SO4?

What equation are you using for neutralisation?

What is the pH of a 0.8 M KOH solution?

What is the definition of pH? At what temperature?

Let's see some thoughts and attempts at answers, so we can begin to see how much you know, rather than dish out seemingly random numbers with no understanding.

S

edit: sorry Borek, you beat me to it

[ramyam]

Hi scouger
I dont know the answer correctly you will try these websites,i think it will help for you...

What would be the concentration in molarity of a 1 N H3PO4 solution?
forums.studentdoctor.net/archive/index.php/t-221024.html

What is the pH of a 0.8 M KOH solution?
cat.inist.fr/?aModele=afficheN&cpsidt=14860750

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