Download a PDF file with 21 questions to balance chemical equations and word equations. Check the answer key for the correct solutions and explanations. Balance the following chemical equations. W Everett Community College Tutoring Center Balancing Equations Worksheet - Solutions. 1) _1_ H 3PO 4 + _3__ KOH Æ _1__ K 3PO 4 + _3__ H 2O. 2) _6__ K + _1__ B.