If excess ammonium sulfate reacts with 20.0g of calcium hydroxide to produce cal

Question

If excess ammonium sulfate reacts with 20.0g of calcium hydroxide to produce calcium sulfate, ammonia, and water, how many grams of ammonia (NH_3) are produced? If excess sulfuric acid reacts with 30.0g of sodium chloride, how many grams of HCl are produced? H_2 SO_4 + nacl rightarrow HCl + (na_2) SO_4 How much silver (I) phosphate is produced if 10.0g of silver (I) acetate react with excess sodium phosphate in the unbalanced equation: AgCH_3COO + Na_3PO_4 rightarrow Ag_3PO4 + NaCH_3COO How many grams of sodium hydroxide are needed to completely neutralize 25.0g of sulfuric acid to form sodium sulfate and water? NaOH + H_2 So_4 rightarrow Na_2 So_4 + H_2O

Explanation / Answer

answer 5

(NH4)2SO4 + Ca(OH)2 CaSO4 + 2 H2O + 2 NH3

(20.0 g Ca(OH)2) / (74.0932 g Ca(OH)2/mol) x (2/1) x (17.0306 g NH3/mol) = 9.19 g NH3

answer 6

H2SO4 + 2 NaCl --> 2 HCl + Na2SO4

Convert your mass of NaCl into moles. Then use the balanced equation to convert moles of NaCl to moles of HCl. Finally convert moles of HCl into grams of HCl.

30.0 g NaCl / 58.45 g/mol = 0.513 mol NaCl ( 2 mol HCl/2 mol NaCl)

= 0.513 mol HCl X 36.45 g/mol = 18.7 grams HCl.

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