All categories

3 years ago

What is the composition of a universal indicator?

Chemistry

1 answer:

Zina [86]3 years ago

6 0

Answer:

 The main universal indicator is in the form of a solution and are thymol blue , methyl red , bromothymol blue and phenolphthalein this mixture is important because each component loses or gains protons depending upon the acidity of the solution being tested .

maybe this mighr help u

You might be interested in

Mixture's and solutions

Anastaziya [24]

Mixtures and solutions... what?

8 0

3 years ago

Which of the following substance is being reduced in the following reaction.? Cu (s) + 2AgNO3 (aq) + 2Ag (s) + Cu(NO3)2 (aq) A)

nikklg [1K]

Answer: The correct answer is Option A.

Explanation:

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

$X\rightarrow X^{n+}+ne^-$

Reduction reaction is defined as the reaction in which an atom gains electrons. Here, the oxidation state of the atom decreases.

$X^{n+}+ne^-\rightarrow X$

For the given chemical reaction:

$Cu(s)+2AgNO_3(aq.)\rightarrow 2Ag(s)+Cu(NO_3)_2(aq.)$

The half reactions for the above reaction are:

Oxidation half reaction: $Cu(s)\rightarrow Cu^{2+}(aq.)+2e^-$

Reduction half reaction: $2Ag^+(aq.)+2e^-\rightarrow 2Ag(s)$

From the above reactions, copper is loosing its electrons. Thus, it is getting oxidized.

Silver ion is gaining electrons and thus is getting reduced.

Hence, the correct answer is Option A.

3 0

3 years ago

What causes global convention currents

shepuryov [24]

Answer: Land absorbs heat energy and releases heat energy quickly. Water absorbs heat energy and releases heat energy slowly. Global convection currents are set up in the atmosphere because of the unequal heating of Earth's surfaces.

7 0

4 years ago

If 2.0 mol of Zn is mixed with 3.0 mol of HCl, which reactant will be limiting?

Soloha48 [4]

The following Balanced Reaction will take place:

Zn + 2HCl → ZnCl₂ + H₂

In the question, we have 2 moles of Zinc and 3 moles of HCl for this reaction

Amount of HCl required to completely react with 2 moles of Zn:

Since we need 2 moles of HCl for every mole of Zn, we will need 2(2) = 4 moles of HCl for every 2 moles of Zn

Identifying the Limiting Reagent:

But we are only given 3 moles of HCl where we need 4 moles to completely react.

So, since HCl is in less amount, it is the Limiting Reagent

8 0

3 years ago

If a sample of nitrogen monoxide occupies 268.0 L of space at STP, how many moles of nitrogen monoxide are

kow [346]

Answer:

1m×268.0L/22.4L=11.9m

Explanation:

there are 11.9 moles of nitrogen monoxide are present

8 0

3 years ago