How many atoms are there in one molecule of k2Cr2O7?

In case of k2Cr2O7, there are 2 atoms of potassium(K), atoms of chromium(Cr) and 7 atoms of oxygen (O). So the atomicity of this compound is the sum of all the atoms present in this compound. So the atomicity of k2Cr2O7 is 11.

How do you write the formula for potassium dichromate?

K2Cr2O7
Potassium dichromate/Formula

What does a single replacement equation look like?

In a single-replacement reaction, or single-displacement reaction, 1 element replaces another in a compound. The basic equation is A + BC → AC + B.

What compound makes use of the prefix Hydro to replace the word hydrogen and modifies the anion’s name by adding the suffix IC for its chemical nomenclature?

Binary Acids
Binary Acids If the compound is a binary acid (comprised of hydrogen and one other nonmetallic element): The word “hydrogen” is changed to the prefix hydro- The other nonmetallic element name is modified by adding the suffix –ic.

How many oxygen atoms are in K2Cr2O7?

Potassium dichromate Structure (K2Cr2O7 Structure) The dichromate ion features two chromium atoms that are bonded to four different oxygen atoms.

How is potassium dichromate K2Cr2O7 manufactured from chromite give balanced equation?

(a) Potassium dichromate is obtained by the fusion of chromite ore (FeCr2O7) with sodium (or potassium) carbonate in the presence of excess of air. (b) The solution is filtered and treated with sulphuric acid. (c) Now sodium dichromate is treated with potassium chloride. As a result, potassium dichromate is produced.

How do you balance a single replacement equation?

You balance the equation for a single replacement reaction the same way as any other equation. You place coefficients in front of the chemical formulas so that the numbers of atoms of the elements are the same on both sides.

When naming acids the prefix hydro is used when?

Acids are named based on their anion — the ion attached to the hydrogen. In simple binary acids, one ion is attached to hydrogen. Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them.

How many chromium and oxygen atoms are in dichromate?

Complete answer: In the dichromate ion, there are two chromium atoms bonded to a total of seven oxygen atoms.

How is potassium dichromate prepared from chromite ore give equations class 12?

The preparation of potassium dichromate from chromite involves the following main steps: (i) The chromate ore is finely ground and heated strongly with molten alkali in the presence of air. (ii) The solution of sodium chromate is filtered and acidified with dilute sulphuric acid so that sodium dichromate is obtained.

How do you balance elements in a chemical equation?

To balance a chemical equation, start by counting the number of atoms of each element on both sides of the arrow. Next, balance the primary elements (leaving hydrogen and oxygen for last) by multiplying them with appropriate numbers, and finally balance hydrogen and oxygen in the same manner. How would your food taste if

How do you balance the reactant and product sides?

Start with an element that appears in only one of the reactants and one of the products. In our example, the only element other than hydrogen is nitrogen, so let’s balance it out. The reactant side has 2 atoms of nitrogen, while the product side has a single atom. Simply multiplying ammonia by 2 would balance the number of nitrogen atoms.

How do you balance out elements other than hydrogen?

In our example, the only element other than hydrogen is nitrogen, so let’s balance it out. The reactant side has 2 atoms of nitrogen, while the product side has a single atom. Simply multiplying ammonia by 2 would balance the number of nitrogen atoms.

How do you check if an equation is balanced?

Now, we count the atoms of each element on both sides of the equation to the check the correctness of the equation The number of atoms of each element on both sides is now equal, therefore this equation is now a balanced equation.