Problem: Potassium metal (K) reacts violently when added to water according to the balanced equation: 2K(s) + 2 H2O(l) → 2 KOH(aq) + H2(g). How many moles of H2O are needed to react completely with 754 mol of K? a. 2 mol of H2O b. 7.54 mol of H2O c. 15.1 mol of H2O d. 3.77 mol of H2O

FREE Expert Solution
83% (212 ratings)
View Complete Written Solution
Problem Details

Potassium metal (K) reacts violently when added to water according to the balanced equation: 

2K(s) + 2 H2O(l) → 2 KOH(aq) + H2(g). How many moles of H2O are needed to react completely with 754 mol of K? 

a. 2 mol of H2

b. 7.54 mol of H2

c. 15.1 mol of H2

d. 3.77 mol of H2O

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Narcisse's class at PBA.