Chemistry

Determine which acid/salt pair you should use to make a buffer with a pH of 5.0?

Asked By: ws
Acid or Salt Formula Concentration Ka value Ammonium citrate (NH4)2HC6H5O7 2 M 4.06 x 10-7 Formic acid HCOOH 2M 1.77 x 10-4 Propionic acid CH3CH2COOH 3M 1.34 x 10-5 Acetic acid CH3COOH 5M 1.75 x 10-5 Phosphoric acid H3PO4 1M 7.52 x 10-3 Sodium formate HCOOH 2M solid --- Sodium citrate dihydrate C6H8O7Na3•2H2O solid--- Sodium acetate trihydrate CH3COONa•3H2O Solid--- Sodium dihydrogen phosphate monohydrate NaH2PO4•H2O 2M 6.23 x 10-8 Sodium dihydrogen phosphate monohydrate NaH2PO4•H2O solid-- Disodium hydrogen phosphate hepta hydrate Na2HPO4•7H2O solid--- Sodium bisulfate monohydrate NaHSO4•H2O 3M 1.20 x 10-2 Sodium propionate CH3CH2COONa solid--- Sodium sulfate decahydrate Na2SO4•10H2O solid---
1 Answer(s) · 14 years ago

What is DDT?

Asked By: Angeli P
What is DDT?
3 Answer(s) · 13 years ago

what is the density for the sulphur ?

Asked By: Mody
what is the density for the sulphur ?
5 Answer(s) · 14 years ago

Solution chemistry please help!(10 points!!)?

Asked By: YeA
find the normal boiling point of 0.57 m C12H22O11(aq). the boiling point constant of water is 0.51 K . kg/mol. answer in units of C(degree) An aqueous solution freezes at -5.64 C (degree). what is the molality of the solution? assume that there is no dissociation of the solute and the kf is 1.69 K . kg/mol. answer in units of C (degree) please if you understand either one can you explain how you got the answer thanks.
1 Answer(s) · 12 years ago

Chemistry question!!! help!?

Asked By: Anonymous
What is the outcome of each of the following reactions? 2 Al(s) + 3 NiCl2(aq)---> __ __(aq)+ __ __(s) 2 Cr(s) +3 NiSO4(aq)---> __ __ (aq) + __ __(s)
5 Answer(s) · 12 years ago

How many grams of NaNO2 form when 599 g NaNO3 react? The yield is 85% 2 NaNO3(s) 2 NaNO2(s) + O2(g)?

Asked By: tim_childress
How many grams of NaNO2 form when 599 g NaNO3 react? The yield is 85% 2 NaNO3(s) 2 NaNO2(s) + O2(g)?
5 Answer(s) · 14 years ago

What is the chemical that makes mood rings change color? And, where can I get it for a school project?

Asked By: HA! HA! HA!
What is the chemical that makes mood rings change color? And, where can I get it for a school project?
2 Answer(s) · 14 years ago

About chemistry help~?

Asked By: Anonymous
Give the systematic name and the old-fashioned name for each of the following transition metal ions Cu2+
1 Answer(s) · 12 years ago

CHEMISTRY HELP ( TRUE OR FALSE ) 10 POINTS?

Asked By: Anonymous
1) the law of constant composition states that compounds contain atoms in fixed proportions. 2) a combustion analyzer measures the molar mass of a compound 3) the information provided by a combustion analyzer and mass spectrometer may be used to determine the molecular formula of a compound 4) if the molecular formula of a compound is C3H8NS the its empirical formula is also C3H8NS
1 Answer(s) · 12 years ago

Chemistry Help please! it has a mass of 2450 grams How many moles of gold do we have?

Asked By: Ashley W
An explorer finds a cache of gold hidden in a treasure chest in a sunken ship. He brings it to the surface and weighs it. It has a mass of 24.50 grams.How many moles of gold does he have?
6 Answer(s) · 12 years ago