3Cu + pHNO3 →3Cu(NO)2 + 4H2 O + xNO In the equation above, the values of p and x respectively are

Assessment: JAMB UTME - Chemistry - 2003 Subject: Chemistry

Question 1 Report

3Cu + pHNO3 →3Cu(NO)2 + 4H2 O + xNO

In the equation above, the values of p and x respectively are

Answer Details
The chemical equation given shows the reaction between copper and nitric acid. The balanced equation is: 3Cu + 8HNO3 → 3Cu(NO3)2 + 2NO + 4H2O. Therefore, the values of p and x respectively are 8 and 2. The coefficient 8 shows that eight moles of nitric acid (HNO3) are required to react with three moles of copper (Cu), and the coefficient 2 shows that two moles of nitrogen monoxide (NO) are produced as one of the products.
Read lesson note on Stoichiometry And Chemical Reactions (WAEC)
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