Determine the mass of salt obtained by reacting 0.2 mol of potassium hydroxide with carbon monoxide.

Given:
n (KOH) = 0.2 mol
To find:
m (K2CO3)
Decision:
2KOH + CO2 = K2CO3 + H2O
n (KOH): n (K2CO3) = 2: 1
n (K2CO3) = 0.2 mol / 2 = 0.1 mol
m (K2CO3) = n * M = 0.1 mol * 138 g / mol = 13.8 g
Answer: 13.8 g



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