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bonufazy [111]
3 years ago
12

What should you do during a titration when you notice the indicator start to indicate the approach of the equilibrium point? Add

the second reactant faster. Add the second reactant slower. Add more indicator.
Chemistry
2 answers:
Ksju [112]3 years ago
7 0

Answer:

Add the second reactant faster.

Explanation:

In titration we take, we take a reactant (titrand) in conical flask. The second reactant (titrant) is filled in burette.

Now we add indicator in the first reactant (taken in flask) and start adding the second reactant from burette.

The reaction starts and when it appears that we are approaching the end point, we start adding the second reactant slower, in order to avoid missing the end point. If we add the second reactant fast, it may lead to addition of excess of reagent and thus may affect our calculations and readings.

Leni [432]3 years ago
6 0

B. Add the second reactant slower.

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If a gas is 0.8L at 900 mm Hg and 400K, what is the new pressure if the volume decreases to 0.5L and 300K?
mezya [45]

Answer:

The new pressure of the gas is 1080 mmHg

Explanation:

The general equation provides a way to calculate the relationship between changesnp in volume, temperature and pressure of a given mass of gas.

The general gas equation is given as P1V1/T1 = P2V2/T2

Where P1 is initial pressure of gas

V1 is initial volume of gas

T1 is initial temperature of gas

P2 is final pressure of gas

V2 is final volume of gas

T2 is final temperature of gas

From the given question, P1 = 900 mmHg, V1 = 0.8 L, T1 = 400 K, P2 = ?, V2 = 0.5 L, T2 = 300 K

Making P2 subject of the general gas equations:

P2 = P1V1T2/V2T1

P2 = (900 × 0.8 × 300) / (0.5 × 400)

P2 = 1080 mmHg

Therefore, the new pressure of the gas is 1080 mmHg.

5 0
3 years ago
If gas in a sealed container has a pressure of 50 kpa at 300 k, what will the pressure be if the temperature rises to 360 k? 161
Illusion [34]

60 \; \text{kPa}

The pressure an ideal gas exerts on a sealed container of fixed volume is directly related to its temperature in degrees Kelvin. That is:

T_1 / T_2 = P_1 / P_2

In this scenario:

  • T_1 = 300 \; \text{K}
  • P_1 = 50 \; \text{kPa}
  • T_2 = 360 \; \text{K}

Rearranging gives

\begin{array}{lll}P_2 &=& P_1 \cdot T_2 / T_1 \\ &=& 50 \; \text{kPa} \times (360 \; \text{K})/ (300 \; \text{K})\\ &=& 60 \; \text{kPa}\end{array}


6 0
3 years ago
Is milk a solution, suspension, compound , colloid ?
kakasveta [241]

Answer:

Colloids (heterogeneous)

The difference between a colloid and a suspension is that the particles will not settle to the bottom over a period of time, they will stay suspended or float. An example of a colloid is milk. Milk is a mixture of liquid butterfat globules dispersed and suspended in water.

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2 years ago
PLEASE I NEED HELP ASAP
Murljashka [212]

Answer:

Because the density of water is one

4 0
4 years ago
The best electrolyte solutions are A. dilute B. concentrated C. saturated
Rudiy27
The correct answer is A.) dilute
8 0
3 years ago
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