# Chem

posted by .

If 390 mL of 0.0410 M aqueous NaI(aq) and 1.36 g of liquid Br2 are reacted stoichiometrically according to the equation, what mass (g) of NaI(aq) remained?

2 NaI(aq) + Br2(l) ¨ 2 NaBr(aq) + I2(s)
Molar Mass (g)
NaI(aq) 149.89
Br2 159.81

Molar Volume (L)
22.400 at STP
Gas Constant
0.0821

• Chem -

1. Convert 390 mL of 0.0410 M NaI to moles NaI. M x L = ?? moles. I found 0.01599 moles NaI.
2. Convert 1.36 g Br2 to moles. moles = g/molar mass. I found 0.008510 moles Br2.
3. Which is the limiting reagent?
a. moles NaBr formed if all NaI is used is
0.01599 x (2 mols NaBr/2 moles NaI) = 0.01599 x 1/1 = 0.01599 moles NaBr.

b. moles NaBr formed if all of the Br2 is used is
0.008510 x (2 moles NaBr/1 mol Br2)= 0.008510 x 2 = 0.01702 moles NaBr.

c. The smaller number is the one to use so NaI is the limiting reagent which means that all of it used and none remains.
Check my numbers. Check my thinking.

## Similar Questions

1. ### Chemistry

If 150 mL of 1.73 M aqueous NaI and 235 g of Pb(NO3)2 are reacted stoichiometrically according to the balanced equation, how many grams of Pb(NO3)2 remain?
2. ### Chemistry

If 0.670mol of liquid Br2 and 460mL of 1.72M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many moles of liquid Br2 remain?
3. ### Chemistry

If 0.870 mol of liquid Br2 and 720 mL of 0.958 M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many grams of solid I2 are produced?
4. ### chemistry

If 890 mL of 0.236 M aqueous NaI and 0.560 mol of liquid Br2 are reacted stoichiometrically according to the balanced equation, how many moles of liquid Br2 remain?
5. ### chemistry

If 890 mL of 0.236 M aqueous NaI and 0.560 mol of liquid Br2 are reacted stoichiometrically according to the?
6. ### chemistry

If 740. mL of 0.06622 M aqueous NaI and 370. mL of 0.07151 M aqueous Pb(NO3)2 are reacted stoichiometrically according to the equation, what mass (g) of NaI remained?
7. ### college chemistry

1) If 740. mL of 0.06622 M aqueous NaI and 370. mL of 0.07151 M aqueous Pb(NO3)2 are reacted stoichiometrically according to the equation, what mass (g) of NaI remained?
8. ### chemistry

If 380. mL of 0.4294 M aqueous CaBr2 and 250. mL of 0.5880 M aqueous SO42- are reacted stoichiometrically according to the equation, how many mol of CaBr2 remained?
9. ### Limiting reagent

If 270. mL of 0.08089 M aqueous Pb(NO3)2 and 710. mL of 0.05493 M aqueous Na+ are reacted stoichiometrically according to the equation, what mass (g) of Na+ remained?
10. ### chemistry

If 73.5 g of liquid Br2 and 330 mL of 1.18 M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many grams of liquid Br2 remain?

More Similar Questions