Mrojanaeidn
Answered

IDNLearn.com is the perfect place to get detailed and accurate answers to your questions. Find the answers you need quickly and accurately with help from our knowledgeable and dedicated community members.

Item 21 -
A student heated a blue solid which
gave off a gas. When tested, the gas
changed cobalt chloride paper to
pink. Which of the following is a
LIKELY component of the gas?
B.
Carbon dioxide
Hydrogen
Dust particles
Water vapour​

Sagot :

Ariana877idn

Answer:I believe the answer is hydrogen because

Explanation:

Procedure

Dissolve 5 g of hydrated cobalt(II) chloride in 100 cm3 of water (solution is TOXIC).

Soak filter paper in this solution, drain and dry in an oven (set at no more that 100 °C), so that it is a definite blue colour.

The filter paper can be cut into small strips and stored in a desiccator with dry silica gel.

Thank you for joining our conversation. Don't hesitate to return anytime to find answers to your questions. Let's continue sharing knowledge and experiences! Thanks for visiting IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more helpful information.