Calculate the amount of the substance, which is 196 g of potassium hydroxide.
| January 13, 2021 | education
Calculate the amount of the substance, which is 196 g of potassium hydroxide. How many ions of each type will this portion of alkali contain?
Given:
m (KOH) = 196g
Find: n (KOH), N (K +), N (OH-)
Decision:
1) n (KOH) = 3.5 mol
2) Analysis of the formula for potassium hydroxide shows that N (K +) = n (KOH), a n (OH -) = 2 * n (KOH)
3) N (K +) = 1 * 3.5 = 3.5
4) N (OH -) = 2 * 3.5 = 7
Answer: 3.5 and 7.
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