Other Chemistry Answers

When an acidic chemical splashes into the eyes, the second action to be carried out is ---------.
Apply 1% sodium carbonate
Apply 1% boric acid solution
Flush the eye with a copious amount of clean lukewarm running water
Put eye drop

Do not use flat-bottomed flasks in in vacuum experiment is a ------------- hazard
Explosion
Fire
Chemical
General safety

All these are titrimetric analysis except ____________ titration
Acid-base
oxidation-reduction
complexometric
compound

Calculate the the average volume of acid used in a titration experiment, if the volume of acid used obtained in rough, first, second, and third titrations are
22.60cm3
,
24.60cm3
,
24.40cm3
, and
24.50cm3

24.03cm3

23.87cm3

24.50cm3

23.83cm3

In the preparation of a solution, it is advisable to shake the mixture well. This is necessary to ----------------.
Ensure that the solution precipitates out very well
Induce air bubbles in the solution
Produce a homogenous solution
Facilitate use of lesser volume of water

If
15cm3
of 10.25M HCl solution is made up to volume in a 500 Ml volumetric flask, what will be its new concentration?
0.306M
3.06M
5.13M
0.52M

All the following apparatus are needed for the preparation of a solution of hydrochloric acid, HCl, from the concentrated solution EXCEPT --------------.
Measuring cylinder
Burette
Crucible
Volumetric flask

One of the following is not a proper way of preparing 0.025M solution from 1.00M stock solution.
2.5 mL of stock solution is diluted to 100mL
25 mL of stock solution is made up to 1000mL
12.5 mL of the stock solution is made up to 500mL
12.5 mL of the stock solution is made up to 750mL

The SI designation candela is for --------------base unit.
Electric current
Luminous intensity
Amount of substance
Temperatu

A type of titration in which an acurately measured amount of one of the standard solution is added to the sample, in excess of the stoichiometric amount of the subtance to be determined in the sample, then unreacted excess is titrated with another standard solution is called ________.
Acid base titration
indirect titration
direct titration
back titration