My formula is this Na2CO3(aq) +CaCl2. 2H2O(aq) --> CaCO3(s) + 2NaCl(aq)+ 2H2O We

Question

My formula is this Na2CO3(aq) +CaCl2. 2H2O(aq) --> CaCO3(s) + 2NaCl(aq)+ 2H2O
Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL ofdistilled water and stir to form the calcium chloridesolution. How much Na2CO3 willI need for a full reaction My formula is this Na2CO3(aq) +CaCl2. 2H2O(aq) --> CaCO3(s) + 2NaCl(aq)+ 2H2O
Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL ofdistilled water and stir to form the calcium chloridesolution. How much Na2CO3 willI need for a full reaction How much Na2CO3 willI need for a full reaction

Explanation / Answer

Na2CO3(aq) +CaCl2. 2H2O(aq) -->CaCO3(s) + 2NaCl(aq) + 2H2O The number of moles of CaCl2. 2 H2Opresent in the reaction = 1.0g/ 131 g/ mol                                                                                                = 0.007633 mole Therefore number fo moles ofNa2SCO3 required to this eaction = 0.007633 moles Thus mass of Na2CO3 required =0.007633 mole * 106 g                                                   = 0.80 g The number of moles of CaCl2. 2 H2Opresent in the reaction = 1.0g/ 131 g/ mol                                                                                                = 0.007633 mole Therefore number fo moles ofNa2SCO3 required to this eaction = 0.007633 moles Thus mass of Na2CO3 required =0.007633 mole * 106 g                                                   = 0.80 g

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