4. Consider the reaction "He(p. d) (a) Complete the reactions, calculate their Q values using mass data and determine whether the reaction is exothermic or endothermic. (*) (b) Using mass defect, calculate their Q values again and compare with the answer of (a). 3.

Balance these chemical equations. (Use the lowest possible whole number coefficients.) (a)    C6H5OH + O2 → CO2 + H2O (b)    AgCl2 + H2 → Ag + HCl   (c)    CuCl + H2 → Cu + HCl   (d)    Ga + H2SO4 → Ga2(SO4)3 + H2 (e)    K + Br2 → KBr(f)    NaNO3 → NaNO2 + O2

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There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. In the first step, calcium carbide and water react to form acetylene and calcium hydroxide: CaC,(s)+2H,O(g)–C,H,(g)+Ca(OH),(s) In the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6 C,H,(g)+3 CO,(9)+4H,0(9)→5 CH,CHCO,H(9) Write the net chemical equation for the production of acrylic acid from calcium carbide, water and carbon dioxide. Be sure your equation is balanced. Explanation Check O 2022 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility 2:24 PM W 4/8/2022 DELL Esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrtScr Insert Delete PgUp PgDn Fn C@ 23 2$ Num Lock & Backspace 1 2 3 4 7 8. Co (O