What mass, in grams, of sodium carbonate is required for complete reaction with

Question

What mass, in grams, of sodium carbonate is required for complete reaction with 8.35g of nitric acid to produce sodium nitrate, carbon dioxide, and water? A) 28.1 g B) 14.04 g C) 4.96 g D) 7.02 g E) 400.0 g Gaseous methanol (CH_4O) reacts with oxygen gas to produce carbon dioxide gas and liquid water. Write a balanced equation for this process. How many grams of magnesium oxide remain after 18.50 g of magnesium oxide reacts with 30.3 g hydrochloric acid to produce magnesium chloride and water? Which of these compounds is a strong electrolyte? A) H_2O B) O_2 C) H_2SO_4 D) C_6H_12O_6 (glucose) E) CH_3COOH (acetic acid) Which of these compounds is a weak electrolyte? A) HCl B) CH_3COOH (acetic acid) C) C_6H_12O_6 (glucose) D) O_2 E) NaCl Which of these compounds is a nonelectrolyte? A) NaOH B) HNO_3 C) C_2H_6O (ethanol) D) KF E) CH_3COOH (acetic acid)

Explanation / Answer

Ans 5 d 7.02 g

The balanced reaction is

Na2CO3 + 2HNO3 ---> 2NaNO3 + CO2 + H2O

1 mole or 106 g of sodium carbonate reacts with 2 moles or 126g of nitric acid

So amount of Na2CO3 required to react with 8.5 g HNO3 will be ( 106× 8.35) / 126 = 7.02 g

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