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quester [9]
3 years ago
7

A chemical indicator that changes colors depending on the concentration of h+ in the solution is called a

Chemistry
1 answer:
DanielleElmas [232]3 years ago
3 0
Answer is: acid-base indicator or pH indicators.

Acid-base indicators are usually weak acids or bases and they are chemical<span> detectors for hydrogen or hydronium cations.</span>
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄). Phenolphthalein is <span>colorless in </span>acidic<span> solutions and pink in </span>basic<span> solutions.
Another example is m</span><span>ethyl orange. It is red colour in acidic solutions and yellow colour in basic solutions.</span>

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Calculate the Ka for the following acid. Determine if it is a strong or weak acid. HClO2(aq) dissolves in aqueous solution to fo
Talja [164]

Answer:

The value of Ka = 1.1*10^{-2}

It is a weak  acid

Explanation:

   From the question we are told that

             The concentration of [HClO_2]=0.24M

             The concentration of  [H^+]=0.051M

             The concentration of  [ClO_2^-]=0.051M

Generally the equation for the ionic dissociation of HClO_2 is

                HClO_2_(aq) -------> H^{+}_{(aq)} + ClO_2^{-}_{(aq)}

The equilibrium constant is mathematically represented as

                         Ka = \frac{concentration  \ of  \ product  }{concentration \ of \  reactant }

                               = \frac{[H^+][ClO_2^-]}{[HClO_2]}

Substituting values since all value of concentration are at equilibrium

                    Ka = \frac{0.051 * 0.051}{0.24}

                          = 1.1*10^{-2}

Since the value of  is less than 1 it show that in water it dose not completely

disassociated  so it an acid that is weak

                         

               

3 0
3 years ago
CAN YOU PLEASE HELP ASAP​
Helga [31]
Your answer would be D you welcome !
7 0
3 years ago
Read 2 more answers
I make my cup of coffee in the morning by pouring boiling water over ground-up coffee beans held in a special piece of paper and
Zigmanuir [339]
Since there are no choices given, my answer might not be what you're looking for. But it can definitely be a correct answer. The technique is called filtration. Filtration is a physical separation to separate the liquid and solid in a mixture. The mixture should be composed of an insoluble solid in a solvent. The mixture is usually passed through a semi-permeable barrier. In this case, a special piece of paper is used. The solvent is the liquid and the solid is the coffee bean grounds. Only the liquid can pass through the paper. The liquid that passes through the paper is generally called a filtrate.
4 0
3 years ago
What is the ph of a (6.00x10^-3) m hi solution?
KatRina [158]
HI is strong acid, so:
[H+] = [HI]
[H+] = 6 × 10^-3 M

pH = -log[H+]
pH = -log(6 × 10^-3) = 2,22

:-) ;-)
5 0
3 years ago
Vinegar has a ph of 2 physical or chemical?
ddd [48]

With a pH of 2, it's very acidic and far from a neutral pH and basic. I would say chemical as my answer.

6 0
3 years ago
Read 2 more answers
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