Toilet bowl cleaners often contain hydrochloric acid which...

Toilet bowl cleaners often contain hydrochloric acid, which dissolves the calcium carbonate deposits that accumulate within a toilet bowl. What mass of calcium carbonate (in grams) can 3.8 g of HCl dissolve? (Hint: Begin by writing a balanced equation for the reaction between hydrochloric acid and calcium carbonate.)

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Transcript

00:01 Okay so let's react some calcium carbonate and hydrochloric acid.

00:06 Hydrochloric acid is hcl, calcium carbonate is c.

00:12 A.

00:12 C.

00:12 03.

00:14 So the two cat ions will switch places the cia and the cl will go together.

00:22 Now calcium plus two chlorides minus one.

00:27 So we need to chlorides to balance out the calcium charge.

00:31 And then we have a church and co three h is plus one.

00:36 C.

00:37 +03 is minus two.

00:39 So i need to hydrogen to cancel out the charge of the carbonate so that the balance the the equation have to put it to in front of the hcl.

00:50 And so the question really becomes, if i have 3.8 g of hydrochloric acid, how many grams of calcium carbonate can i dissolve? can i react? and in strike geometry you don't always have to go from reacting to product.

01:09 You can go from anyone substance to any other substance.

01:12 So from here it's just a normal strike geometry problem.

01:16 We're going to start with our 3.8 g of hcl and we're going to have to convert that to moles.

01:26 So we can use our chemical reaction one mole of hcl.

01:31 Oops that should be mobile has a molar mass.

01:38 If you add up the h in the cl of 36.46 g that gets us moles of hcl...