Question

How many grams of KOH can be formed when 58.00 grams of K2O react with 44.00 grams of H2O?

K2O + H2O yields KOH

Be sure to balance the equation.

17.30 grams
69.10 grams
137.8 grams
273.3 grams

Answer 1

i am trying to solve this i got the balanced equation to be K2O+H2O yields 2KOH

Answer 2

K20 + H20 --> 2KOH

is correct

Answer 3

yep so what do I do then?

Answer 4

work out the molecular masses of each compound

from memory K = 39, O = 16 and H = 1

so 94 g of K2O react with 18 grams of water to give 112 g of KOH

Answer 5

sorry i am so confused is this right mol X g/mol= g

Answer 6

you have excess of water

so 58 g of K2O will yield 58 * 112
------ grams of KOH
94

Answer 7

theres no need to work in moles - just use grams

Answer 8

oh okay. where did you get 112 and 94?

Answer 9

best to check on those figures i gave you - in case my memory is faulty

Answer 10

K2O = 2*39 + 16 = 94
2KOH = 2 * (39 + 16 + 1) = 112

Answer 11

ooo alright so the answer is B!

Answer 12

right

Answer 13

thank you!!!

Answer 14

yw