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toxicsugar22
Group Title
For the following reaction, 6.73 grams of hydrochloric acid are mixed with excess barium hydroxide. The reaction yields 15.5 grams of barium chloride.
2 HCl (aq) + Ba(OH)2 (aq) = BaCl2 (aq) + 2 H2O (l)
(1) What is the theoretical yield of barium chloride ?
grams
(2) What is the percent yield for this reaction ?
%
 one year ago
 one year ago
toxicsugar22 Group Title
For the following reaction, 6.73 grams of hydrochloric acid are mixed with excess barium hydroxide. The reaction yields 15.5 grams of barium chloride. 2 HCl (aq) + Ba(OH)2 (aq) = BaCl2 (aq) + 2 H2O (l) (1) What is the theoretical yield of barium chloride ? grams (2) What is the percent yield for this reaction ? %
 one year ago
 one year ago

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electrokid Group TitleBest ResponseYou've already chosen the best response.1
step 1. 2 moles HCL > 1 mole BeCl2 step 2. find gram molecular wts of HCl and BeCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
@toxicsugar22 now, express the answer
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
thsi is my first time doing this so please bear with me
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
im just practicing
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
no problem.. try it. it is fairly easy,...
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
just answer for step 2.
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
gram mol weight (gmw) = sum of atmic weights of all the elemnts in the molecule so, gmw of HCl = at. wt. of H + atomic wt. of CL
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
at. wt. of Cl = ? you have to refer to your Preiodic table
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
17 is the "atomic number" of Cl and 35.5 is the atomic wt.
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
good, so, gmw of HCl = 36.5 what this means is that 1mole of HCl weighs 36.5g (g=grams)
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
similarly, for BeCl2... notice that there are two atoms of chlorine
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
sorry it is BaCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
practice to write it clearly.. gmw of BaCl2 = ___ + ___ + ____ = ____g
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
sorry I got 137 is the atomic number for Ba and 35 for Cl
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
no.. atomic number = number of protons in the nucleus of an atom atomic mass number = total number of protons + neutrons in the nucleus of an atom
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
ok so gmw of BaCl2 = ?
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
I added the two 137+ 35
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
good now back to step 2... summarize our values
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
@toxicsugar22
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
you see.. those are just numbers.. I cannot help you unless you put meaning to them. gram mol wt of HCL = gram mol wt of BaCl2 =
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
1mole of HCl weighs 36.5g 1 mole of BaCI2 WEIGHS 172
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
now, using step 1, 2 moles of HCl  yield > 1mole BaCl2 i.e, 2* gmw of HCL  yields > 1*gmw of BaCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
follow?
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
now, put your numbers
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
2*_ = __ g of HCl  > ____g BaCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
perfecto..
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
02*36.5 = 73 g of HCl  > 172g BaCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
so, 73g HCl > 172g BaCl2 (Theoretical) so, 6.73g HCl  should yield how much? (we have 6.73g HCl and Expected BaCl2 is?)
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
no.. HCl is our "reactant"..... BaCl2 is our product
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
ok, so, 73g HCl  reacts to give us (yield) > 173g of BaCl2 how much HCl do we have in our reaction? (this part from the given question)
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
15.5 is the actual yield
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
just stay to the point... do not go jumping places.
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
6.73 is how much HCI WE HAVE
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
so, if 73g HCl  provides > 173g BaCl2 then 6.73g HCl  should provide > ____g of BaCl2 this is a simple ratio..
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
follow?
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
STEPS!!!
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
..... \[{6.73 \times 173 \over 73}=?\]
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
15.94
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
ok. but do you understand this?
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
OK NOW i DO
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
I had to rethimk the problem
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
good. then THIS is your theoretical yield i.e., in theory, that 6.73g of HCl should give us with 15.94g of BaCl2
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
got it?
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
good thank you for tutoring me
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
not done yet that is just part (a)
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
part B. is where we do actual yield times theroicatl yield / 100
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
is that right
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
(b) % yield = (actual yield) * 100 / (theoretical yield) this value must be less than 100 actual yield = given in problem theoretical yield = calculated above
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
so 15.5 times 100/ 15.94 =97.23
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
ok good
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
can you go over one more problem with me
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
you are good tutor for me
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
just so I get this done evenfurthur
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
call it a day for today. some other time. keep practicing, put meanings to numbers and write clearly so you see what you are doing
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
ok thank you for helping me
 one year ago

electrokid Group TitleBest ResponseYou've already chosen the best response.1
@toxicsugar22 wtf not even a medal for the pain
 one year ago

toxicsugar22 Group TitleBest ResponseYou've already chosen the best response.0
soory I forgot
 one year ago
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