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
kiruha [24]
2 years ago
7

To determine the pH of a solution using a pH indicator paper, you need a .

Chemistry
2 answers:
bonufazy [111]2 years ago
6 0

PH is the water and it color blue

kherson [118]2 years ago
6 0

Answer:

color key

creating a color key

Have known pH values

Explanation:

You might be interested in
Hydrogen reacts with chlorine to form hydrogen chloride (HCl (g), mc012-1.jpgHf = –92.3 kJ/mol) according to the reaction below.
Kobotan [32]

<u>Given:</u>

H2(g) + Cl2 (g) → 2HCl (g)

<u>To determine:</u>

The enthalpy of the reaction and whether it is endo or exothermic

<u>Explanation:</u>

Enthalpy of a reaction is given by the difference between the enthalpy of formation of reactants and products

ΔH = ∑nHf (products) - ∑nHf (reactants)

      = [2Hf(HCl)] - [Hf(H2) + Hf(Cl2)] = 2 (-92.3) kJ = - 184.6 kJ

Since the reaction enthalpy is negative, the reaction is exothermic

<u>Ans:</u> The enthalpy of reaction is -184. kJ and the reaction is exothermic

3 0
3 years ago
Read 2 more answers
Which describes the path of energy that a gas powered car uses to drive along a road?
harkovskaia [24]

Answer:

mechanical energy to electrical energy to light energy

4 0
3 years ago
Find the pH of a 0.100 molar H2C6O6 solution with ka, where KA is equal 8.0×10–5​
lubasha [3.4K]

The pH of the solution is 2.54.

Explanation:

pH is the measure of acidity of the solution and Ka is the dissociation constant. Dissociation constant is the measure of concentration of hydrogen ion donated to the solution.

The solution of C₆H₂O₆ will get dissociated as C₆HO₆ and H+ ions. So the molar concentration of 0.1 M is present at the initial stage. Lets consider that the concentration of hydrogen ion released as x and the same amount of the base ion will also be released.

So the dissociation constant Kₐ can be written as the ratio of concentration of products to the concentration of reactants. As the concentration of reactants is given as 0.1 M and the concentration of products is considered as x for both hydrogen and base ion. Then the

K_{a}=\frac{[H^{+}][HB] }{[reactant]}

[HB] is the concentration of base.

8 * 10^{-5} =\frac{x^{2}  }{0.1}\\\\\\x^{2} = 8 * 10^{-5}*0.1

x^{2} = 0.08 * 10^{-4}\\ \\x = 0.283*10^{-2}

Then

pH = - log [x] = - log [ 0.283 * 10^{-2}]\\ \\pH = 2 + 0.548 = 2.54

So the pH of the solution is 2.54.

4 0
3 years ago
We can know what elements make up a star by studying the star's position in the
Amanda [17]
The answer is "night sky"
hope i helped :)
7 0
3 years ago
WILL GIVE BRAINLIEST TO THE BEST ANSWER, AND PLEASE GIVE EXPLANATION!
Alexxandr [17]
A.) Molecules speed up.
3 0
2 years ago
Other questions:
  • All of the following are examples of synthesizing extept
    15·2 answers
  • Can you place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and su
    14·2 answers
  • At what temperature will water freeze if 100g NaCl are dissolved in 500g H2O?
    7·1 answer
  • Place the following in order of increasing F-A-F bond angle, where A represents the central atom in each molecule. PF3 OF2 PF4
    7·1 answer
  • On a periodic table, element names are represented by: A. numbers B. chemical symbols C. pictures D. matter
    8·2 answers
  • Which statements are scientific statements
    9·1 answer
  • What is a reaction rate?
    5·1 answer
  • Atom A and Atom B have the same number of protons and neutrons, but they do not have the same nun ber of
    12·1 answer
  • How many grams of hydrogen are in 46 g of CH40?<br>​
    10·2 answers
  • Calculate the molar mass of each of the following:<br> (a) SnO
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!