1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
True [87]
3 years ago
9

Estimate the heat of neutralization of H3PO4 in kJ/mol given these data: Heat transferred = 2.2 x 102 J Moles of H3PO4 = 1.5 x 1

0−3 mol Moles of NaOH = 5.0 x 10−3 mol
Chemistry
2 answers:
Feliz [49]3 years ago
5 0

1.) write out the balance equation 3NaOh+H3PO4->Na3PO4+3H2O  

2.) You are given everything needed to calculate q=heat transfer=2.2*10^2, H3PO4 moles= 1.5*10^-3, NaOH moles=5.0*10^-3 

3.) equation is deltaHneutraliztion=q/Moles of limiting reagent H3PO4 is limiting reagent because lowest moles, and is used up first 

4.) Now plug in variables DeltaH=2.2*10^2(1.5*10^3)= 146.67kj/mole Notice we had to convert J to kj,

barxatty [35]3 years ago
4 0
<span>write out the balance equation
3NaOh+H3PO4->Na3PO4+3H2O
You are given everything needed to calculate
q=heat transfer=2.2*10^2,
H3PO4 moles= 1.5*10^-3,
NaOH moles=5.0*10^-3
equation is deltaHneutraliztion=q/Moles of limiting reagent H3PO4 is limiting reagent because lowest moles, and is used up first
Now plug in variables
DeltaH=2.2*10^2(1.5*10^3)= 146.67kj/mole
Notice we had to convert J to kj,</span>
You might be interested in
Plz help this was due yesterday butttttt i didn’t want to do it...
sergejj [24]
So what am I suppose to answer here?
8 0
3 years ago
Read 2 more answers
Water vapor is heated and rising into the air is called what?
Lady_Fox [76]

Answer:

Evaporation

Explanation:

3 0
3 years ago
Determine the mass of sodium carbonate required to produce 23.4g of sodium chloride when it reacts with excess hydrochloric acid
Leni [432]
The balanced chemical reaction for the described reaction above is,
                          Na2CO3 + 2HCl ---> 2NaCl + H2CO3
From the reaction, 1 mole of Na2CO3 is needed to produce 2 moles of NaCl. In terms of mass, 106 grams of Na2CO3 are needed to produce 116.9 grams of NaCl. From this,
                (23.4 g NaCl) x (106 g Na2CO3 / 116.9 NaCl = 21.22 g Na2CO3
Thus, approximately 21.22 g Na2CO3 is needed for the desired reaction. 
8 0
3 years ago
A flask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is atta
Rashid [163]
Following the Law of Conservation of Mass, you simply add the mass of both substances. Thus, 160 grams + 40 grams = 200 grams. So, even if initially, they are in liquid and solid form, they would still have the same mass even if they change phases, owing to that they are in a closed space.
8 0
3 years ago
Read 2 more answers
How is a light bulb related to radiation?
salantis [7]
Light bulbs works by converting electricity into light by using electric currents. it emits electromagnetic radiation
4 0
3 years ago
Read 2 more answers
Other questions:
  • How many moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose
    12·1 answer
  • In run 1, you mix 7.9 mL of the 43 g/L MO solution (MO molar mass is 327.33 g/mol), 3.13 mL of the 0.040 M SnCl2 in 2.0 M HCl so
    6·1 answer
  • Fossils found in layers of sediment give us clues to Earth's past. Based on the fossil record of this area, we can assume that t
    14·2 answers
  • When two clear, colourless liquids are mixed together, a yellow precipitate is formed. This is an example of a
    11·1 answer
  • Q.
    7·2 answers
  • The United States has about which percentage of the world's coal reserves?
    6·2 answers
  • What shows the substance at the highest temperature?
    14·2 answers
  • Using correct significant figures, calculate the length of one side of a cube made of gold, if the mass of the cube is 4.05 g an
    11·1 answer
  • Which isoelectronic series is correctly arranged in order of increasing radius?.
    11·1 answer
  • A mixture of NaCl and CuCO3 was dissolved in water and the resulting slurry was filtered in to a beaker. The beaker and the filt
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!