Chemistry, 19.03.2020 21:06 angeldawnfick
A precipitate of zinc hydroxide can be formed using the reaction below.
ZnCl2(aq) + 2 KOH(aq) → Zn(OH)2(s) + 2 KCl(aq)
If excess KOH is used, the zinc hydroxide will form zincate ions and dissolve in the solution according to the chemical equation below.
Zn(OH)2(s) + 2 OH-(aq) → Zn(OH)42-(aq)
Which of the following best describes the reaction that occurs when 0.36 mole of ZnCl2 in solution is mixed with 0.54 mole of KOH in solution?
A
KOH is the limiting reagent, and 0.54 mole of Zn(OH)2 precipitate is produced.
B
KOH is the limiting reagent, and 0.27 mole of Zn(OH)2 precipitate is produced.
C
ZnCl2 is the limiting reagent, and no Zn(OH)2 precipitate is produced.
D
ZnCl2 is the limiting reagent, and 0.27 mole of Zn(OH)2 precipitate is produced.
Answers: 2
Chemistry, 22.06.2019 04:30
How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.
Answers: 1
Chemistry, 22.06.2019 10:30
Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:
Answers: 1
Chemistry, 22.06.2019 12:40
When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign
Answers: 2
A precipitate of zinc hydroxide can be formed using the reaction below.
ZnCl2(aq) + 2 KO...
ZnCl2(aq) + 2 KO...
Mathematics, 01.12.2021 01:00
Mathematics, 01.12.2021 01:00
Physics, 01.12.2021 01:00
Mathematics, 01.12.2021 01:00
Social Studies, 01.12.2021 01:00
Mathematics, 01.12.2021 01:00
Chemistry, 01.12.2021 01:00
Biology, 01.12.2021 01:00