12. Potassium reacts aggressively with water, as shown in this equation: 2 K + 2 H2O -> 2 KOH + H2 If 0.200 grams of potassium are added to 15.0 grams of water, what mass of KOH can form in this reaction?
Added by Timothy C.
Close
Step 1
200 grams. To do this, we need to know the molar mass of potassium (K), which is 39.10 g/mol. Moles of K = Mass of K / Molar mass of K Moles of K = 0.200 g / 39.10 g/mol Moles of K = 0.00511 mol Show more…
Show all steps
Your feedback will help us improve your experience
Ma Ednelyn Lim and 65 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
95.0 g of potassium reacts with water to produce potassium hydroxide and hydrogen gas. Calculate the mass of potassium hydroxide produced. The unbalanced equation is: K + H2O --> KOH + H2 Show all work and use appropriate labels and units. Be sure to highlight the final answer.
Supreeta N.
K + H2O --> KOH + H2 1. How many grams of KOH are produced if 224 g of H2O are used? 2. How many moles of K are used if 20 moles of H2O react? 3. How many grams of H2O are used if 3678 grams of H2 are produced?
Madhur L.
Calculate the molarity of a $\mathrm{KOH}$ solution if $30.68 \mathrm{~mL}$ of the $\mathrm{KOH}$ solution reacted with $0.4178 \mathrm{~g}$ of potassium hydrogen phthalate, KHP.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD