Which is a redox reaction?
a) 2kbr + f2 > 2kf + br2
b) 2hcl + mg(oh)2 --> 2hoh + mgcl2
c) 2nacl + h2so4 --> na2so4 + 2hcl
d) ca(oh)2 + pb(no3)2 --> ca(no3)2 + pb(oh)2
i know the answer is a, but confused as to why that is. can someone explain this for me? .
Solved
Show answers
More tips
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Chemistry
- C Computers and Technology How are different types of cars similar and different?...
- H History Which of the following describes how the Pan-African movement led to Kenya s independence in 19637 A. Pan-Africanism promoted the integration of western ideals into...
- E English 2. Part B: How does this depiction of women contribute to their expected roles and responsibilities? (Commonlit)...
Ответ:
option a is the only option that has a change in oxidation sates. Fluorine goes from 0 to -1 indicating that it gained electrons (got reduced) while bromine goes from -1 to 0 indicating it loses electrons (got oxidized).
(2Br⁻→Br₂+2e⁻ and F₂+2e⁻→2F⁻).
I hope this helps. Let me know if anything is unclear.
Ответ:
The Earth and sun are part of the solar system, with the sun at its centre. An Earth day is 24 hours because the Earth spins on its axis once every 24 hours. At any one time half of the Earth's sphere is in sunlight (day) while the other half is in darkness (night).