The formula for the conjugate acid of HPO42- is?   A student weighs out a 2.33 g sample of sodium fluoride, transfers it to a 300 mL volumetric flask, adds enough water to dissolve it and then adds water to the 300 mL tic mark. What is the molarity of NaF in the resulting solution?   A student wants to prepare a solution of iron(III) fluoride with a known molarity.How many grams of FeF3 must be weighed out to prepare 250. mL of a 0.245 M aqueous solution of the salt?   An aqueous solution has a hydroxide ion concentration of 1.0 x 10^-10 M. What is the hydronium ion concentration in this solution? Concentration =       M Is this solution acidic, basic or neutral?   An aqueous solution has a hydrogen ion concentration of 1.0 x 10^-6 M. What is the hydroxide ion concentration in this solution? Concentration =     M Is this solution acidic, basic or neutral?

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter3: Chemical Reactions
Section: Chapter Questions
Problem 137QRT
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The formula for the conjugate acid of HPO42- is?

 


A student weighs out a 2.33 g sample of sodium fluoride, transfers it to a 300 mL volumetric flask, adds enough water to dissolve it and then adds water to the 300 mL tic mark.

What is the molarity of NaF in the resulting solution?

 


A student wants to prepare a solution of iron(III) fluoride with a known molarity.

How many grams of FeF3 must be weighed out to prepare 250. mL of a 0.245 M aqueous solution of the salt?

 

An aqueous solution has a hydroxide ion concentration of 1.0 x 10^-10 M.

What is the hydronium ion concentration in this solution?

Concentration =       M

Is this solution acidic, basic or neutral?

 

An aqueous solution has a hydrogen ion concentration of 1.0 x 10^-6 M.

What is the hydroxide ion concentration in this solution?

Concentration =     M

Is this solution acidic, basic or neutral?

 

 

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