# Chemistry

posted by .

3.00 g of Zn is allow to react with 1.75 g CuSO4 . calculate how many grams of Zn will remain after the reaction is complete ?

• Chemistry -

This is a limiting reagent (LR) problem in reverse. First you must identify the LR reagent.
Zn + CuSO4 ==> Cu + ZnSO4
mols Zn = grams/atomic mass.
mols CuSO4 = grams/molar mass.

Using the coefficients in the balanced equation, convert mols Zn to mols Cu. Do the same for mols CuSO4. Most likely these two values will not be the same which means one of them is not right; the correct value in LR problems is ALWAYS the smaller value and the reagent producing that value is the LR.

Using the coefficients in the balanced equation, convert mols of the LR to mols of the "other" reagent. Convert mols of the other reagent to grams. g = mols x molar mass and subtract from the initial grams. That will be the amount left over.

## Similar Questions

1. ### chemistry

If 2.00g of Zn is allowed to react with 1.75g of CuSO4, how many grams of Zn wil remain after the reaction is complete?
2. ### Chemistry

If 609.5 grams of vanadium (II) oxide, VO, and 832 grams of iron(III) oxide, Fe2O3, are put into a container and allowed to react according to the equation above, which substance(s) and how many grams of each would be present in the …
3. ### Chem

For the following reaction, 21.7 grams of diphosphorus pentoxide are allowed to react with with 13.1 grams of water. What is the maximum amount of phosphoric acid that can be formed in grams?
4. ### Chemistry

Zinc and sulfur react to form zinc sulfide according to the equation Zn+S=>ZnS a) How many grams of ZnS will be formed?
5. ### college chemistry

if 2.00g of Zn is allowed to react with 2.00g of CuSO4 according to the equation CuSO4(aq) + Zn(s)-----> ZnSO4 (aq)+ Cu(s) how many grams of Zn will remain after the reaction is complete ?
6. ### Chemistry

If a solution containing 33.82 g of mercury(II) acetate is allowed to react completely with a solution containing 9.718 g of sodium sulfate, how many grams of solid precipitate will be formed?
7. ### Chemistry

If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of sodium sulfate, how many grams of solid precipitate will be formed?
8. ### Chemistry

If a solution containing 118.44 g of mercury(II) perchlorate is allowed to react completely with a solution containing 17.796 g of sodium sulfide, how many grams of solid precipitate will be formed?
9. ### Chemistry

Based on the following balanced equation: 2 NH3 + 2 O2 -->N2O + 3 H2O a. How many moles of O2 are required to react completely with 6.00 moles of NH3?
10. ### Chemistry

When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. 26.0 grams of magnesium nitride are reacted with 17.6 grams of water. 1. How many grams of magnesium nitride will remain …

More Similar Questions