Number of results: 46,035
A concept map was to be created on acids and bases. The concept terms that were given to use were: aqueous solution,bases,acids,ions,weak bases, strong bases, strong acids, weak acids,dissociation, weak electrolyte, strong electrolyte,reaction,salt, neutralization, hydronium ...
October 23, 2011 by Hannah
Determine the direction of the following reaction from the relative strengths of acids and bases: H2S(aq) + C2H3O2-(aq) yields Hc2H3O2(aq) + HS-(aq) The book says this will favor the reactants. I'm confused...shouldn't this be neutral because both reactants and products have ...
February 17, 2013 by Robby
Your laboratory supervisor directs you to prepare 500.0 mL of a buffer with a pH of 9.40. You have available all the weak acids and bases and the salts of those weak acids and bases. Describe how you could make this buffer.
February 8, 2012 by Sandra T.
Is these true or false: -Every Bronsted-Lowry acid is also a Lewis acid. -Conjugate acids of weak bases produce more acidic solutions than conjugate acids of strong bases. Thank you very much!
February 23, 2010 by ChemistryStudent2010
Your laboratory supervisor directs you to prepare 500.0 mL of a buffer with a pH of 9.40. You have available all the weak acids and bases listed in your textbook's appendix and the salts of those weak acids and bases. Describe how you could make this buffer.
February 8, 2012 by Linda
An oxalic acid solution contains the following species in varying concentrations: H2C2O4, HC2O4-, C2O4^2-, and H+. Which of the above four species can act only as acids, which can act only as bases, and which can act as both acids and bases?
September 29, 2011 by Amber
Because solution pH is a measurement of either [H3O+] or [-OH] concentration, the acidic or basic nature of the acids and bases used in this experiment can be ascertained by inspecting just the density (electrostatic) potentials from the products (which contain either H3O+ or...
April 14, 2008 by David
I'm stuck on a couple of similar problems involving pH and acids/bases 1) What is the final pH of a 1L solution that is initially .15 M HF and .2 M NaF after 10 mL of .02 M HCl has been added? Ka=7.2x10^-4 Do i just calculate the total mols of H and divide by the volume, then ...
November 26, 2008 by Evelyn
what are the strong acids and what is a good way to remember them what are the strong bases and what is a good way to remember them I think but am not sure: are the weak acids and bases everything else?
November 20, 2011 by anonymous
chemistry-acids and bases
determine how many mL's of a monohydroxic base with a pH of 9 is needed to neutralize 50 mL of a monoprotic acid with a pH of 2. I do not understand what to do. can someone please help?
May 25, 2009 by jackie
The [H3O+] of a solution with pH = 3 is -10 M. 10 M. 1 x 10-3 M. 1 x 103 M. 1 x 10-11 M. Identify the acid(s) and base(s) in the following reaction: CH3COOH(aq) + NH3(aq) CH 3COO-(aq) + NH4+(aq) CH3COOH is the only acid, and NH3 is the only base. CH3COOH is the only base, and ...
June 12, 2010 by amanda
How do the qualities of acids and bases shape the natural world we live in? I really apppreciate, in advance, any help you can give me-I'm homeschooled and just trying to understand this better. Thank you-
April 26, 2010 by Sara
These blanks I REALLLY need your help. Our teacher gave the teaching job to this other I think coop student who wants to be a teacher to teach for a day but I| seriously don't understand anything she said..in short I don't have anyyy clue about this. So please help me:( 1) ...
March 7, 2013 by Kristien
Give the names of these acids. A. HNO(subscript 2) B. HMnO(s.s. 4) C. HCN D. H(s.s. 2)S Write the names of these bases. A. LiOH B. Pb (OH) s.s. 2 C. Mg(OH)s.s. 2 D. Al(OH)s.s. 3
December 13, 2007 by anonymous
acids and alkalis
can you tell me me some acids and alkalis that are used in the house acids. vinegar(acetic acid), lemon juice (citric acid), cream of tartar (potassium hydrogen tartrate), vanish (sodium hydrogen sulfate--but I think the newer product has changed the active ingredient). bases...
January 18, 2007 by abigal
How do the qualities of acids and bases help us in the natural world? Please help-I posted this yesterday and I really don't get it-can someone direct me,please? Thank you
April 27, 2010 by Sara
In titrations of acids and bases, what is the difference between the end point of the titration, and the equivalance point? Also, what is chemically occuring during the buffer zone? Thanks! Good question and one that students sometimes have trouble with. The equivalence point ...
May 15, 2007 by Jessie
Which of the following is true about indicators? A. They are weak acids or bases. B. They are as accurate as a pH meter. C. They maintain their colors across the range of pH values for which they are used. D. all of the above is it A???
June 3, 2014 by Angela
chem- acids and bases
sorry to take up your time again, acids and bases just really confuse me, i'd really appreciate your help again. "What is the pH at the end point for the titration of 0.20M HNO2 by 0.20M NaOH? Ka nitrous acid= 4.5 x 10^-4." this is what i do know: - end point, so it's the salt...
April 16, 2011 by marie
How many milliliters of a 15.0%, by mass solution of KOH(aq) ( d= 1.14g/mL ) are required to produce 27.0 L of a solution with pH = 11.70? I'm really not sure how to do this, it's from Acids & Bases chapter. Any help is appreciated, thanks. (:
February 22, 2009 by Agatha
What are three common types of products produced by reactions that occur in aqueous solutions? (out of the following) -gases -water -electrons -precipitates -acids -ions -bases
October 7, 2012 by Anya
Like water, liquid ammonia undergoes autoionization: (a) Identify the Brønsted acids and Brønsted bases in this reaction. (b) What species correspond to H and OH and what is the condition for a neutral solution?
March 10, 2011 by sok
Classify the following as: Weak or strong acid, weak or strong base, salt (from weak/strong acid and base). If appropriate, split the formula into its component ions. HNO3 So far, all I have is: HNO3 + H2O -> NO3^- + H3O^+ And I know HNO3 is a strong acid. What would I do ...
May 26, 2007 by Raj
acids and bases
Is everything an acid or a base? it totally depends. It depends on how you define an acid and base. In water systems, yes. But in non water solutions...say oil mixed in gasoline....pH has no meaning. Why acids act in similar ways?
February 22, 2007 by Wanda
i need help on this i dont get it MDJ OB 018: Alice looked in the looking glass and saw her image there. She invited her image to some out but the visit was short since her image found that she was starving to death and that all the food tasted bad. Why was this? Victorian ...
May 1, 2007 by joe
Al3+ and Pb2+ act as acids or bases in acidic or alkaline environment. True or False? I think this is true because they are amphoteric, but I am not sure. yes. They are amphoteric.
February 20, 2007 by Chemistry
The reaction: H2PO4- + HAsO42 ---> HPO4- + H2AsO4- Which one of the sets above lists both of the base species involved in the equilibrium? I'm confused and couldn't identify the conjugate acids and bases properly. Could Dr.Bob explain abt this problem ? Thank you
March 25, 2012 by Swaastikaa
which is false about naturally occurring a-amino acids? they belong to the D family of chiral compounds related to D-glyceraldehyde all are chiral except for glycine each has a characteristic isoelectric point the ph at which there is no net migration of the amino acid toward ...
November 20, 2008 by Jake
We're studying acids and bases; the question states that 50mL of 0.1M HNO3 solution is mixed with 25mL of 0.1M NaOH. What is the pH? I thought that I would use the Henderson-Hasselbach equation; but my answer does not match the one give in the solution. Any help?
May 23, 2008 by micole
I am stumped on this one...Please help!!! Write a balanced base ionization reaction for methylamine (CH3NH2) in water. Identify all species as acids and bases and identify the conjuate acid-base pairs.
November 19, 2011 by Nathan
What is the genetic code? a) the order of amino acids in proteins makes up the genetic code b) the order of amino acids in mRNA makes up the genetic code c) the order of nitrogen bases in tRNA makes up the genetic code d) the order of nitrogen bases in DNA makes up the genetic...
January 22, 2014 by Skyler
Please Help! Describe how water could be classified as either an acid or a base. Give an example of each (acid and base). What word describes substances that can be classified as acids or bases?
May 8, 2014 by Jackson
how do you find the pH of a titration solution at its halfway point to the equivalence, and how would it affect solutions dealing with strong acids and strong bases, this is an example just to see it quantitatively: 100.0 mL of 0.100 M HF (Ka = 7.2 x 10-4) by 0.100 M NaOH
December 1, 2012 by Chris
Calulate the degree of ionization for NH3(aq) in 1.0 M solution, Kb = 3.236E-4. I've seen degree ionization for acids and not bases. Do I need to find the Ka [H+] value of the base to determine the degree of ionization?
March 7, 2012 by Rosi
What are the acids and bases of the following salts? Na3PO4 PbS KIO3 Do you meant on dissociation? phosphoric acid, sodium hydroxide lead hydroxide, hydrogen sulfuric potasslim hydroxide, idoic acid. I am not certain of your question.
May 19, 2007 by Carter
Both carboxylic acids and phenols react with strong bases to produce _____. gaseous products the conjugate base of the carboxylic acid or phenol a complex with water a stronger acid or phenol
March 22, 2012 by Krystal
Excusme: Can somone tell me what are alkalis and acids. I am doing a homework about acids and alkalis [level 3 to 6]. About level 3 is name some alkalis and aids and some everyday substance that contains acids. Level 4 is about know some acids and alkalis which are more ...
December 20, 2008 by Shrivats Neupane
Classify each of the compounds below as strong or weak acids, strong or weak bases, or salts: A. HCl B. KOH C. NH4NO3 D. H2SO4 E. NH4OH F. H3PO4 G. NaOH H. HClO4 i. Mg(OH)2 J. H2CO3 K. BaSO4 l. HC2H3O2 The numbers are sub(little numbers
April 29, 2014 by ASAP!!
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 3.60g of the base. 2HNO_3(aq) + Ca(OH)2(aq) -> 2H_2O(l) + Ca(NO_3)2(aq) H_2SO_4(aq) + 2KOH(aq) -> 2H_2O(l) + K_2SO_4(aq) how do i ...
October 20, 2007 by leo
chemistry acids and bases
which solution is potentially more hazardous to your eyes: .1M HCl or .1M NaOH? Why? are they equally hazardous since one is an extremely strong acid and one is an extremely strong base?
February 19, 2009 by casey
Chemistry (Acids and Bases)
The natural pH of rainwater is 5.6. The acidity of rainwater is caused by the dissolution of (TRUE OR FALSE) boric acid sulfuric acid carbonic acid calcium carbonate calcium oxide nitric acid
March 20, 2011 by Andy
chemistry; acids and bases
A common constituent of kidney stones is Ca3(PO4)2, calcium phosphate. Are kidney stones containing Ca3(PO4)2 more likely to form when the urine is acidic or when it is basic? Explain.
May 23, 2010 by kris
Calculate soln pH if 100 mL 0.10 M Na2S is mixed with 200 mL 0.050 M HCl. The hint is consider Kb for HS^-. The answer is pH=9.74. Can someone walk me through the neccessary steps to get this answer? What are the k1 and k2 values for H2S in your text? Sorry I'm just now ...
May 23, 2007 by John Peterson
Chemistry 20 TRUE OR FALSE
1) A conductivity apparatus is not that useful in separating acids from bases because both solutions conduct electricity. True or false 2)The hydronium ion contains a water molecule bonded to a hydrogen ion. True or False
November 18, 2010 by Anonymous