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
loris [4]
3 years ago
14

Consider the following balanced chemical equation, KCl(aq) AgNO3(aq) → AgCl(s) KNO3(aq)When a sample of impure potassium chlorid

e (0.900 g) was dissolved in water, and treated with excess silver nitrate (AgNO3), 1.26 g of silver chloride (AgCl) was precipitated. Calculate the percentage KCl in the original sample.
Chemistry
1 answer:
stiks02 [169]3 years ago
5 0

Answer:

In the original sample there's 72.78% KCl

Explanation:

KCl(aq) + AgNO₃(aq) → AgCl(s) + KNO₃(aq)

  • To solve this problem we need to calculate the mass of <em>pure</em> potasssium chloride. To do that we calculate the moles of KCl that reacted into AgCl:

1.26 g AgCl * \frac{1molAgCl}{143.32gAgCl}*\frac{1molKCl}{1molAgCl} = 8.792 *10^{-3} molKCl

  • Now with the molecular weight of KCl, we can calculate the mass of KCl that reacted:

8.792 * 10⁻³ mol KCl * 74.55 g/mol = 0.655 g KCl

  • Finally we divide the mass of <em>pure</em> KCl by the mass of the sample, to calculate the percentage KCl:

0.655 / 0.900 * 100% = 72.78%

You might be interested in
For maleic acid, hoocch=chcooh, ka1 = 1.42  10–2 and ka2 = 8.57  10–7 . what is the concentration of maleate ion (–oocch=chcoo
uranmaximum [27]

ANSWER

Find the attachment

7 0
3 years ago
Read 2 more answers
which conversion factor do you use first to calculate the number of grams of fecl3 produced by the reaction of 30.3 g of fe with
Alexeev081 [22]

Answer:

30

Explanation:

8 0
3 years ago
Please answer this thanks!!...
Alex17521 [72]

Answer:sorry.

Explanation:

4 0
3 years ago
12) _Na+ _H2O → ___ NaOH + __H2
TEA [102]

Answer:

Explanation:

2 Na+ 2 H2O →  2 NaOH + 1 H2

4 0
3 years ago
You conduct an experiment in which you measure the temperature (T) and volume (V) of a mysterious sphere of gas at several diffe
____ [38]

Volume of the gas is 525 L.

<u>Explanation:</u>

It is given that the volume of the gas divided by the temperature is 1.75.

V/T = 1.75

As per the Charles law, volume is proportional to the temperature.

V ∝ T

V/T = constant

Now we have to find V, and T is given as 300 K.

So plugin the values as,

V/300 = 1.75

Rearranging the equation to get V as,

V = 1.75×300

  = 525 L

3 0
3 years ago
Other questions:
  • Reaction rate depends on how often molecules come into contact with each other, the way in which they come together, and the amo
    13·2 answers
  • Is it possible to decrease resistance of the wire without changing the material it's made out of?
    13·1 answer
  • Pls pls I need help to solve this questions
    15·1 answer
  • Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of
    10·2 answers
  • A 1.5m wire carries a 3 A current when a potential difference of 84 V is applied. What is the resistance of the wire?
    15·2 answers
  • When 100 mL of 1.0 M Na3PO4 is mixed with 100 mL of 1.0 M AgNO3, a yellow precipitate forms and [Ag ] becomes negligibly small.
    15·1 answer
  • Compounds have physical properties that
    7·1 answer
  • What is the possible results of the test of a few drops of a mixture of sodium hydroxide and copper(ii) tetraoxosulphate (vi) so
    5·1 answer
  • Which statements best describe science? Check all that apply.
    9·2 answers
  • PLEASE I NEED HELP!!! I WILL MARK YOU AS BRAINLEST!!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!